Fig. 12, Fig. 10, Fig. 12a – Greenheck Multi-blade Fire & Combination Fire Smoke Dampers Installation Booklet (826249) User Manual
Page 13
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. 11
8. Recommended Preparation of Openings in Wood and Metal Stud Walls
• Frame wall openings as shown below(see Fig. 12 & 12A).
• Gypsum wall board must be fastened 12 in. (305mm) on center to all stud and runner flanges surrounding opening (see
Fig. 12 & 12A).
• Prepare opening between studs and sleeve assembly as shown below (see Fig. 10 & 11).
• All construction and fasteners must meet the requirements of the appropriate wall design (See UL Fire Resistance
Directory) and/or local codes.
12 in.
24 in. o.c.
Maximum
Floor Runner
Ceiling Runner
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. (51mm)
2 in. (51mm)
2 Panhead
Screws
Fig. 12
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. 10
Second set of studs are not required on openings
36 in. x 36 in. (914mm x 914mm) or smaller.
Metal stud only
Fig. 12A
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