Fig. 10, Fig. 10a, Fig. 9 – Greenheck Multi-blade Fire & Combination Fire Smoke Dampers Installation Booklet (826249) User Manual
Page 33: Fig. 8
Metal Stud Construction
Wooden Stud Construction
In wood stud construction,
gypsum wallboard must cover
all wood stud surfaces.
Gypsum Wallboard
Stud or Runner
Retaining
Angle
1 in. Min.
Damper
Sleeve
In metal stud construction,
exposed steel surfaces need
not be covered with gypsum
wallboard.
Gypsum Wallboard
Stud or Runner
Retaining
Angle
1 in. Min.
Damper
Sleeve
Fig. 9
12 in.
24 in. o.c.
Maximum
Floor Runner
2 in.
Ceiling Runner
2 Panhead
Screws
24 in. o.c.
Maximum
(metal studs)
24 in. o.c.
Maximum
(metal studs)
16 in. o.c.
Maximum
(wood studs)
16 in. o.c.
Maximum
(wood studs)
2 in.
Fig. 10
Second set of studs are not required on openings
36 in. x 36 in. (914mm x 914mm) or smaller.
Metal stud only
Fig. 10A
Metal Stud Construction
Wooden Stud Construction
In wood stud construction,
gypsum wallboard must cover
all wood stud surfaces.
Gypsum Wallboard
Stud or Runner
Retaining
Angle
1 in. Min.
Damper
Sleeve
In metal stud construction,
exposed steel surfaces need
not be covered with gypsum
wallboard.
Gypsum Wallboard
Stud or Runner
Retaining
Angle
1 in. Min.
Damper
Sleeve
Fig. 8
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.
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