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ZCVRB47 –Vented Chase- Style 1 – OPENING WITH NO GRILL
VENTILATION PLATES MUST BE REMOVED
Open Area
105 SQ. IN. MINIMUM
1-1/4" MIN with 3 Sides Open
47"
FRAMING I.D.
70"
MIN
Open
Area
Ceiling / Enclosure Top
105 Sq. In. MIN
Vertical Venting must use
Firestop Spacer (ZDVFS) or Attic
Insulation Shield and Sealant
Optional Attic
Insulation Shield
(ZDVAIS, ZDVAIS24)
1-1/4" MIN with 3
Open Area
38-3/4"
SEALED ENCLOSURE
TOP VIEW
Ceiling / Enclosure Top
Open Area
105 SQ. IN.
MINIMUM
Sides Open
⚠ NOTE: Minimum Opening is
105 sq. inches of free air.
⚠ NOTE: If using insulation in
vented chase (i.e. for outside wall),
wall board / drywall is required to
support all insulation.
Vented chase must be clean and
free of all debris (i.e. loose
insulation, pieces of wood, etc.).
⚠ NOTE: HEAT CANNOT BE
DISCHARGED INTO THE
70"
WALLS, FLOOR, OR CEILING.
MIN
Heat must exit through the required
vented chase opening near the
ceiling.
70"
MIN
52"
MIN
Exterior wall is insulated
and drywalled.
21
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