Recommended Preparation Of Openings In Wood And Metal Stud Walls - Greenheck FSD-311V Installation, Operation And Maintenance Instructions

7. RECOMMENDED PREPARATION OF OPENINGS IN
WOOD AND METAL STUD WALLS
• Frame wall openings as shown. (see Fig. 10 & 10A)
• Gypsum wall board must be fastened 12 in. (350mm)
on center to all stud and runner flanges surrounding
opening. (see Fig. 10 & 10A).
• Prepare opening between studs and sleeve assembly as
shown (see Fig. 8 & 9).
• All construction and fasteners must meet the
requirements of the appropriate wall design (See UL Fire
Resistance Directory) and/or local codes.
Metal Stud Construction
Gypsum Wallboard
Stud or Runner
Retaining
Angle
In metal stud construction,
Damper
exposed steel surfaces need
Sleeve
not be covered with gypsum
Fig. 8
wallboard.
Wooden Stud Construction
Gypsum Wallboard
Second set of studs are not required on openings
Retaining
Angle
36 in. x 36 in. (914mm x 914mm) or smaller.
In wood stud construction,
Damper
Sleeve gypsum wallboard must cover
all wood stud surfaces.
Fig. 10A
6
1 in. Min.
Stud or Runner
1 in. Min.
Metal stud only
In metal stud construction,
Damper
exposed steel surfaces need
Sleeve
not be covered with gypsum
wallboard.
Wooden Stud Construction
Gypsum Wallboard
Retaining
Angle
In wood stud construction,
Damper
Sleeve gypsum wallboard must cover
all wood stud surfaces.
Fig. 9
24 in. o.c.
Maximum
(metal studs)
12 in.
24 in. o.c.
Maximum
16 in. o.c.
Maximum
(wood studs)
Floor Runner
Fig. 10
Stud or Runner
1 in. Min.
24 in. o.c.
Ceiling Runner
Maximum
(metal studs)
2 in.
2 Panhead
Screws
2 in.
16 in. o.c.
Maximum
(wood studs)