3M Versaflo M / M-100 Series / M-200 / M-300 Series Manual

UNPACKING

Your 3M Versaflo M-Series Headtop pack should contain:

1. M-106 Headtop or M-107 Headtop or M-206 Headtop or M-207 Headtop or M-306 Headtop or M-307 Headtop or M-406 Headtop or M-407 Headtop
2. User Instructions
3. Reference Leaflets

Proper selection, training, use, and appropriate maintenance are essential in order for the product to help protect the wearer from certain airborne contaminants and physical hazards. Failure to follow all instructions on the use of these respiratory protection products and/or failure to properly wear the complete product during all periods of exposure may adversely affect the wearer's health, lead to severe or life threatening illness, injury or permanent disability. For suitability and proper use follow local regulations, refer to all information supplied or contact a safety professional or 3M on 0870 60 800 60 (UK) or 1800 320 500 (Ireland).

Particular attention should be given to warning statements where indicated.

SYSTEM DESCRIPTION

The 3M Versaflo M-Series headtops provide respiratory protection and are designed to be used with an approved Air Delivery Unit (see Reference Leaflet) to provide respiratory protection. These products meet the requirements of EN12941 (Respiratory protective devices – Powered filtering devices) and EN14594 (Respiratory protective devices – Continuous flow compressed air line breathing apparatus). Note: When regulators and compressed air supply tubes that are exclusively marked EN1835 are used with M-Series headtops, the system will only meet the requirements of EN1835. Air is fed via a breathing tube from the belt mounted Air Delivery Unit to the back of the headtop. The air flows over the top of the wearer's head and down in front of the face. The M-Series headtops offer eye protection and specific headtops within the range also offer head protection.

LIMITATIONS OF USE

Use this respirator strictly in accordance with all instructions:

• contained in this booklet
• accompanying other components of the system (e.g. 3M M-Series Reference Leaflet, Air Delivery Unit User Instructions).

Do not use the M-100/M-300/M-400 Series headtops in concentrations of contaminant above 10 times the Workplace Exposure Limit (WEL) when used with 3M Dustmaster Powered Air Turbo.
Do not use the M-100 Series headtops in concentrations of contaminant above 20 times the Workplace Exposure Limit WEL) when used with 3M Versaflo TR-802E, 3M Versaflo TR-602E, 3M Versaflo TR-302E/TR-302E+, 3M Jupiter or 3M Adflo Powered Air Turbos or 3M Versaflo V-100E, V-200E, V-500E, 3M Flowstream, 3M Vortemp or 3M Vortex Regulators.
Do not use the M-200 Series headtops in concentrations of contaminant above 20 times the Workplace Exposure Limit (WEL) when used with 3M Jupiter Powered Air Turbo. Do not use the M-200 Series headtops in concentrations of contaminant above 40 times the Workplace Exposure Limit (WEL) when used with 3M Versaflo V-100E, V-200E or V-500E Regulators.
Do not use the M-300 Series headtops in concentrations of contaminant above 20 times the Workplace Exposure Limit (WEL) when used with 3M Jupiter or 3M Adflo Powered Air Turbos or 3M Flowstream, 3M Vortemp or 3M Vortex Regulators. Do not use the M-200/M-300 Series headtops in concentrations of contaminant above 40 times the Workplace Exposure Limit (WEL) when used with 3M Versaflo TR-802E, 3M Versaflo TR-602E or 3M Versaflo TR-302E/TR-302E+ Powered Air Turbos. Do not use the M-300 Series headtops in concentrations of contaminant above 40 times the Workplace Exposure Limit (WEL) when used with 3M Versaflo V-100E, V-200E or V-500E Regulators.
Do not use the M-400 Series headtops in concentrations of contaminant above 20 times the Workplace Exposure Limit (WEL) when used with 3M Adflo Powered Air Turbo. Do not use the M-400 Series headtops in concentrations of contaminant above 40 times the Workplace Exposure Limit (WEL) when used with 3M Versaflo TR-802E, 3M Versaflo TR-602E, 3M Versaflo TR-302E/TR-302E+ or 3M Jupiter Powered Air Turbos.
Do not use the M-400 Series headtops in concentrations of contaminant above 40 times the Workplace Exposure Limit (WEL) when used with 3M Versaflo V-100E, V-200E or V-500E Regulators or 3M Flowstream, 3M Vortemp or 3M Vortex Regulators.
Do not use for respiratory protection against unknown atmospheric contaminants or when concentrations of contaminants are unknown or immediately dangerous to life or health (IDLH).
Do not use in atmospheres containing less than 19.5% oxygen. (3M definition. Individual countries may apply their own limits on oxygen deficiency. Seek advice if in doubt).
Do not use these products in oxygen or oxygen-enriched atmospheres.
Only use with the Air Delivery Units, spare parts and accessories listed in the Reference Leaflet and within the usage conditions given in the Technical Specification.
These products do not supply oxygen.
Only for use by trained, competent personnel.
Leave the contaminated area immediately if:

1. Any part of the system becomes damaged.
2. Airflow into the headtop decreases or stops.
3. Breathing becomes difficult.
4. Dizziness or other distress occurs.
5. You smell or taste contaminants or irritation occurs.

Never modify or alter this product. Replace parts only with original 3M spare parts. High winds above 2m/s, or very high work rates (where the pressure within the headtop can become negative) can reduce protection. Adjust equipment as appropriate or consider an alternative form of respiratory protective device.
If using in Supplied Air mode, ensure that:

• The source of the air supply is known.
• The purity of the air supply is known.
• The air supply is of a breathable quality to EN12021.

Users should be clean-shaven where the respirator's face seal comes into contact with the face. (M-100/M-200 and M-300 series).

These products meet the requirements of certain industrial eyewear standards and with some models, certain industrial head protection standards. They do not provide complete head, eye, and face protection from severe impact and penetration and are not a substitute for good safety practices and engineering controls.

Use only with recommended spectacles. Eye protectors against high speed particles worn over standard ophthalmic spectacles may transmit impacts, thus creating a hazard to the user. Contact your supplier.
If protection against high speed particles at extremes of temperature is required then the selected eye-protector should be marked with the letter T immediately after the impact letter, i.e. FT, BT or AT. If the impact letter is not followed by the letter T then the eye protector shall only be used against high speed particles at room temperature. In case of intended use in explosive atmospheres, contact 3M Technical Service.

Do not use in high heat environments above the recommended maximum temperature.
Do not use the Head Neck and Shoulder cover or non-flame resistant face seals and shrouds around high heat, sparks, and flames.

Materials which may come into contact with the wearer's skin are not known to cause allergic reactions to the majority of individuals.
These products do not contain components made from natural rubber latex.

EQUIPMENT MARKING

For Air Delivery Unit marking please see appropriate User Instruction.
The M-100 Series headtops are marked to EN12941 TH1/TH2 and EN14594 2B.
The M-200 Series headtops are marked to EN12941 TH2/TH3 and EN14594 3B.
The M-300 Series headtops are marked to EN12941 TH1/TH2/TH3 and EN14594 2B/3B.
The M-400 Series headtops are marked to EN12941 TH1/TH2/TH3 and EN14594 3B.
The M-206 and M-207 headtops with M-200 helmet shell are marked to EN812 (see below).
The M-306 and M-307 headtops with M-300 helmet shell are marked to EN397 (see below).
The M-406 and M-407 headtops with M-400 helmet shell are marked to EN397 (see below).
Additional EN812 markings.
440 V a.c.
Additional EN397 markings.
LD
440 V a.c.
The M-925 visors are marked to EN166:1:BT:3:9
The M-927 visors are marked to EN166:1:BT:3
The M-Series visor surrounds are marked to EN166:3:9:BT
Where the markings on the visor and visor surround are different, the lower classification should be taken.
Label inside the headtop with a date of manufacture (YYYYDDD e.g. 2009090 = 2009, 90th day)
Label inside the headtop: WARNING! Possible electrostatic hazard. The helmet and visor must only be cleaned in a safe area.
Packaging not suitable for food contact.

Note: When regulators and compressed air supply tubes that are exclusively marked EN1835 are used with M-Series headtops, the system will only meet the requirements of EN1835.

PREPARATION FOR USE

Check apparatus is complete, undamaged and correctly assembled. Any damaged or defective parts must be replaced with original 3M spare parts before use.
Scratched or damaged visors should be replaced.
Undertake pre-use checks on Air Delivery Unit assembly as outlined in the appropriate user instruction.

• Remove any protective film from the visor

Headtop adjustment
The headtop should be adjusted to give the best face seal and field of vision. To adjust the head suspension, rotate the ratchet knob to tighten/loosen the suspension. A size reducing ratchet comfort pad may be required to improve fit and stability. Peel off the backing on the comfort pad and attach to the ratchet back plate.
The height on the head and the balance of the headtop can be adjusted by tightening/loosening the fabric straps to raise/lower the headtop (Fig 1) (M-100/M-200 Series only). Alternatively, the suspension headband can be adjusted in four locations (Fig 2). Each position can be adjusted independently to give a custom fit.

OPERATING INSTRUCTIONS

DONNING

1. Select an approved breathing tube (Please see 3M M-Series Reference Leaflet for list of 3M approved breathing tubes) and connect top end to the headtop assembly. Please see Technical Specification for breathing tube lengths. (Note: An adaptor may be required with some breathing tubes – see Reference Leaflet for details). Inspect the gasket located on the bayonet end of the breathing tube (i.e. the end that connects to the Powered Air Turbo) for signs of wear or damage. If the seal is worn or damaged, the breathing tube should be replaced.
2. Connect the bottom end of the breathing tube to the outlet of the Air Delivery Unit.
3. Adjust and fit the Air Delivery Unit as outlined in the appropriate User Instruction.
4. Ensure the visor is in the raised position and fit headtop. Ensure headtop is held firm and comfortable. If necessary adjust headtop as described earlier.
5. Switch on the Powered Air Turbo or connect the compressed air supply tube to the Regulator.
6. 1. M-100/M-200/M-300 Series. Lower the visor into the down position by pulling on the loop located on the face seal so that the face seal is under the chin. Check face seal is correctly positioned all around the face.
   2. M-400 Series. Lower the visor frame into the closed position. Tighten the adjustable chord on the inner shroud until there is less than a two finger gap between your skin and the inner shroud.

Always properly assemble and wear both the inner and outer shroud.
Ensure the visor frame firmly latches in the closed position. Replace worn or damaged parts if required.

7. Ensure at least minimum airflow into the headtop is achieved and adjust for maximum comfort – see appropriate User Instruction.
8. If needed, lift the visor and adjust the airflow deflector. When fully open, more airflow is directed across the face. When partially closed, a portion of air is directed towards the visor. After adjusting, lower the visor back into the down position (M-100/M-200/M-300 Series) or closed position (M-400 Series).

IN USE

Use in the power / air supply off state is not normal, there may be a rapid build up of carbon dioxide, depletion of oxygen and little or no protection is provided, vacate the contaminated area immediately.
Take care to prevent the breathing tube from becoming looped around protruding objects. If this should occur vacate the contaminated area and check apparatus is undamaged. If during use the air supply stops or is reduced, vacate the contaminated area immediately and investigate the cause. The 'in-use' life of the product will vary with frequency and conditions of use. Headtops used in aggressive environments or outdoors in direct sunlight may need to be replaced more frequently than headtops used occasionally indoors. 3M recommends a maximum life (shelf-life plus in-use life) of 5 years from the date of manufacture when stored in accordance with the recommended storage conditions. Note: Most plastic components have a moulded in date of manufacture and must be replaced as described above regardless of outward appearance.

Do not use beyond the maximum life of the product.

DOFFING

Do not remove the headtop or turn off the air supply until you have vacated the contaminated area.

1. M-100/M-200/M-300 Series. Grasp the face seal, lift the visor and lift the headtop off the head.
   M-400 Series. Loosen the inner shroud, grasp the visor surround and lift the visor, then lift the headtop off the head.
2. Switch off the Powered Air Turbo or disconnect the compressed air supply tube from the Regulator.
3. Unbuckle the waist belt.

NOTE If the respirator has been used in an area that has caused it to become contaminated with a substance requiring special decontamination procedures it should be placed in a suitable container and sealed until it can be decontaminated or discarded.

CLEANING INSTRUCTIONS

Use only the cleaning processes and agents described in this section to clean the product.

Use a clean cloth dampened with a mild solution of water and liquid household soap.
Do not use petrol, chlorinated degreasing fluids (such as trichloroethylene), organic solvents or abrasive cleaning agents to clean any part of the equipment.
To disinfect use wipes as detailed in Reference Leaflet. Allow product to dry before use.

MAINTENANCE

Maintenance, servicing and repair must only be carried out by properly trained personnel.

Use of unapproved parts or unauthorised modification could result in danger to life or health and can invalidate any warranty.

Helmets subjected to severe impact should be replaced.

Face seal replacement (M-100/M-200 Series) andM-300 Series).
Unhook the elastic loop from the headband and remove the plastic face seal tab from the 'T' attachment points (Fig 3A, 3B and 3C). Pull the black face seal gasket slowly out of the visor frame (Fig 4). Install the new face seal by aligning the gasket with the edge of the groove in the visor frame. Press the gasket firmly and fully into the groove around the whole visor frame. Re-attach the plastic face seal tab and elastic loop.

Shroud replacement (M-400 Series).
Pull the black shroud gasket slowly from the headtop (Fig 5). Release the suspension ratchet from the hole in the outer shroud and pull the large plastic tab off the air inlet of the headtop. Re-insert the air inlet into the new outer shroud making sure the plastic tabs are pushed underneath the headtop shell. Align the gasket with the edge of the groove and press firmly and fully into this groove around the whole headtop.

Inner shroud replacement.
Un-zip the inner shroud from the outer shroud and replace.

Always properly assemble and wear both the inner and outer shroud.

Head suspension replacement (M-100/M-200 Series).
Remove the face seal as described above. Release the suspension from the headtop by pulling the height adjustment slot off the peg at each of the four attachment points (Fig 2 ). Attach the replacement head suspension using the same attachment points and attach the face seal.

Head suspension replacement (M-300 and M-400 Series).
Remove the face seal as described above (M-300 Series only). With the headtop upside down, release the suspension by pushing upward on the plastic hangers of the web straps (Fig 6). Remove the centre web strap by pushing upwards on the plastic hangers. Attach the replacement centre web strap and suspension by inserting the plastic hangers into the appropriate slots. Ensure all hangers are fully inserted.

Forehead seal replacement (M-100/M-200 Series).
Unbutton the seal from the attachment point on the suspension (Fig 7). Pull the black gasket slowly out of the groove. Install the new seal by aligning the gasket as shown in Fig 8. Press the gasket firmly and fully into the groove. Re-attach the forehead seal to the head suspension.

Forehead seal replacement (M-300 Series).
Remove current seals from headtop. Gently scrape off any residue by hand. Clean the surfaces with wipe (see Reference Leaflet) or damp cloth and wipe dry with towel. Ensure surfaces are completely dry before installing new forehead seals. Ensure replacement seals adhere firmly to the headtop.

Replacement jaw gasket (M-400 Series).
Pull the black gasket slowly out of the headtop (Fig 9). Align the new gasket with the edge of the groove in the visor frame. Press the new gasket firmly and fully into the groove.

Airflow deflector replacement.
With the visor in the open position, remove the damaged/broken airflow deflector (use a tool if necessary) and replace.

Ratchet replacement.
Locate the ratchet attachment points on the suspension (Fig 10A). Press down on each of the four sections on the attachment points (Fig 10B ). Hold the replacement ratchet so that the attachment holes are curved in the up position (Fig 10C ). Snap attachment points onto the suspension.

Visor replacement.
Release the visor frame buttons by pushing the buttons outward from inside the visor (Fig 11). (Note: For M-400, it may be easier to push button with visor in the up position). Remove the visor from the frame (Fig 12). Insert the replacement visor into the groove in the visor frame and align the notches in the visor with the button holes in the frame. Push the visor frame buttons into the frame to lock the visor in place (Fig 13). The buttons should make an audible "click" when fully seated in the frame.

Ensure visor buttons are firmly secured and flush to the visor frame (Fig 14). Replace worn or damaged parts if required.

Visor frame/pivot kit replacement.
The pivot kit is shown in Fig 15 (posts are shown at the top, then back plates and metal springs at the bottom).
Remove the face seal as described above (M-100/M-200 and M-300 Series only). With visor in the up position, pull down on metal spring and pull out to remove (Fig 16). Remove the frame. If replacing frame or pivot kit, remove post with red "3M" from visor frame by placing the frame on the edge of a table, resting on the post, and press down forcefully on the visor frame with heel of hand. If replacing pivot kit, lift back plate up slightly and slide out from slot on headgear shell to remove (Fig 17). Use a tool if necessary. The replacement post should be inserted into the frame so the '3M' is positioned the correct way up when the product is worn. Insert the replacement back plate (round edge first and with the 'fan' pattern facing to the outside of the helmet - Fig 18). Line up the visor frame over the attachment slots and slide the spring into place (Fig 19). Note: The visor frame should be in the fully open or closed position before the spring is installed.

Replacement visor frame buttons.
Follow instructions for visor replacement above and insert replacement buttons.

Visor gasket replacement.
Pull the black visor gasket slowly from the groove (Fig 20). Install the new gasket by aligning with the edge of the groove. Press the gasket firmly and fully into the groove.

Forehead comfort pad.
Detach the comfort pad from the headband. Wrap the replacement comfort pad around the headband and re-attach (Fig 21).

Head, neck and shoulder cover (M-100/M-200/M-300 Series only).
Remove the black visor gasket from the groove (Fig 20). Insert headtop into cover and pull the air inlet fully through the opening in the back of the cover. Insert the gasket on the cover firmly and fully into the groove on the top of the visor frame.

Flame resistant headtop cover.
Remove the black visor gasket from the groove (Fig 20). Insert the gasket on the cover firmly and fully into the groove on the top of the visor frame. Pull loop on headtop cover over the air inlet on the headtop. The air inlet fits through the hole in the back of the cover. Note: If fitting the cover in combination with the ear muff assembly, please see the ear muff assembly instructions below.

Chin strap.
Attach the chin strap to the attachment points on the head suspension (Fig 22).

Headtop mounted ear muff assembly (M-100/M-200/M-300 Series only).
Locate the attachment points (Fig 23 and 24 ). As worn, the right side mount is marked 'X' and the left side mount is marked 'O' (Fig 25). The earmuff should be attached as shown in Fig 26. Use a screwdriver to push in the attachment points before screwing the ear muff assembly as tightly as possible to the shell.

Note: If using the ear muff assembly in combination with the flame resistant headtop cover, the attached ear muffs must first be pulled through the slits in the headtop cover before pulling the loop on the cover over the air inlet.

STORAGE AND TRANSPORTATION

These products should be stored in the packaging provided in dry, clean conditions away from sources of high temperature and petrol and solvent vapours.

Do not store in direct sunlight.

Do not store outside the temperature range -30°C to +50°C or with humidity above 90%. If the product will be stored for an extended period of time before use, the suggested storage temperature is 4°C to 35°C.
When stored as stated, the maximum life (shelf life plus in-use life) is 5 years from date of manufacture. The original packaging is suitable for transporting the product throughout the European Union.

TECHNICAL SPECIFICATION

(Unless otherwise stated in the Reference Leaflet)

Respiratory Protection

M-100 Series
Nominal Protection Factor = 10 Assigned Protection Factor = 10
EN12941 TH1 when connected to 3M Dustmaster Powered Air Turbo.
Nominal Protection Factor = 50 Assigned Protection Factor = 20
EN12941 TH2 when connected to 3M Versaflo TR-802E, 3M Versaflo TR-602E, 3M Versaflo TR-302E/TR-302E+, 3M Jupiter and 3M Adflo Powered Air Turbos.
EN14594 2B when connected to 3M Versaflo V-100E, V-200E, V-500E and 3M Flowstream Regulators.
EN1835 LDH2 when connected to 3M Vortemp and 3M Vortex Regulators.

M-200 Series
Nominal Protection Factor = 50 Assigned Protection Factor = 20
EN12941 TH2 when connected to 3M Jupiter Powered Air Turbo.
Nominal Protection Factor = 500 Assigned Protection Factor = 40
EN12941 TH3 when connected to 3M Versaflo TR-802E, 3M Versaflo TR-602E and 3M Versaflo TR-302E/TR-302E+ Powered Air Turbos.
Nominal Protection Factor = 200 Assigned Protection Factor = 40
EN14594 3B when connected to 3M Versaflo V-100E, V-200E and V-500E Regulators.

M-300 Series
Nominal Protection Factor = 10 Assigned Protection Factor = 10
EN12941 TH1 when connected to 3M Dustmaster Powered Air Turbo.
Nominal Protection Factor = 500 Assigned Protection Factor = 40
EN12941 TH3 when connected to 3M Versaflo TR-802E, 3M Versaflo TR-602E and 3M Versaflo TR-302E/TR-302E+ Powered Air Turbos.
Nominal Protection Factor = 200 Assigned Protection Factor = 40
EN14594 3B when connected to 3M Versaflo V-100E, V-200E and V-500E Regulators.
Nominal Protection Factor = 50 Assigned Protection Factor = 20
EN12941 TH2 when connected to 3M Jupiter and 3M Adflo Powered Air Turbos.
EN14594 2B when connected to 3M Flowstream Regulator.
EN1835 LDH2 when connected to 3M Vortemp and 3M Vortex Regulators.

M-400 Series
Nominal Protection Factor = 10 Assigned Protection Factor = 10
EN12941 TH1 when connected to 3M Dustmaster Powered Air Turbo.
Nominal Protection Factor = 50 Assigned Protection Factor = 20
EN12941 TH2 when connected to 3M Adflo Powered Air Turbo
Nominal Protection Factor = 500 Assigned Protection Factor = 40
EN12941 TH3 when connected to 3M Versaflo TR-802E, 3M Versaflo TR-602E, 3M Versaflo TR-302E/TR-302E+ and 3M Jupiter Powered Air Turbos.
Nominal Protection Factor = 200 Assigned Protection Factor = 40
EN14594 3B when connected to 3M Versaflo V-100E, V-200E and V-500E Regulators and 3M Flowstream Regulator.
EN1835 LDH3 when connected to 3M Vortemp and 3M Vortex Regulators.
Note: When regulators and compressed air supply tubes that are exclusively marked EN1835 are used with M-Series headtops, the system will only meet the requirements of EN1835.
Note: The M-Series headtops meet the higher strength (B) requirements of EN14594.
They are approved for use with a range of compressed air supply tubes that meet both the lower and higher strength (A and B) requirements. Please see Equipment Marking section of relevant Regulator User Instructions for information.
Nominal Protection Factor (NPF) - a number derived from the maximum percentage of total inward leakage permitted in relevant European Standards for a given class of respiratory protective devices.

Eye Protection
Visor surround - EN166:3:9:BT (Liquid splash 3, molten metal 9 and medium energy impact at extremes of temperature BT).
M-925 Visor – EN166:1:BT:3:9 (Optical class 1, medium energy impact at extremes of temperature BT, liquid splash 3 and molten metal 9)
M-927 Visor – EN166:1:BT:3 (Optical class 1, medium energy impact at extremes of temperature BT and liquid splash 3).

Head protection
The M-206 and M-207 headtops with M-200 helmet shell meet the requirements of EN812 (see below).
440 V a.c. - Electrical insulation.
The M-306 and M-307 headtops with M-300 helmet shell meet the requirements of EN397 (see below).
The M-406 and M-407 headtops with M-400 helmet shell meet the requirements of EN397 (see below).
LD - Lateral deformation.
440 V a.c. - Electrical insulation.

Flow Characteristics
Manufacturers Minimum Design Flow (MMDF).
170 l/min (3M Versaflo TR-802E, 3M Versaflo TR-602E and 3M Versaflo
TR-302E/TR-302E+ Powered Air Turbo and 3M Versaflo V-100E, V-200E and V-500E Regulators)
160 l/min (3M Adflo Powered Air Turbo)
150 l/min (3M Jupiter and Dustmaster Powered Air Turbo and 3M Flowstream, 3M Vortemp and 3M Vortex Regulators).
Note: When using the M-400 Series headtops in combination with the 3M Vortemp and 3M Vortex Regulators, the recommended pressure range is 4 - 6 bar).
Maximum Flow - See appropriate User Instructions.

Head Size
One size, adjustable to fit 51cm to 64cm (UK sizes 6 ¹/₈ - 8).

Breathing tube lengths
BT-20S – 735mm (29 inches)
BT-20L – 965mm (38 inches)
BT-30 – 525mm to 850mm (21 inches to 34 inches)
BT-40 – 840mm (33 inches)
834008 - 950mm (37 inches)
834016 - 525mm to 850mm (21 inches to 24 inches)
834017 - 775mm (31 inches)

Operating Temperature
-10ºC to +55ºC

Weight:
M-106 605 g, M-107 605 g, M-206 650g, M-207 650g, M-306 873 g, M-307 873 g, M-406 1196 g and M-407 1147 g.

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