Williams Brothers Corporation of America Defining Quality One Access Door at a Time

Toll Free: 800-255-5515

Toll Free: 800-255-5515

WB Type SV Automatic Fire Vent

Type SV automatic fire and smoke vents are available in a number of standard UL listed and FM-approved sizes. Features include fully insulated covers and galvanized steel or aluminum construction. By Bilco.

Construction Specifications:

Material: Steel: Cover and frame are 14 gauge G-90 paint bond galvanized steel; Aluminum: Cover and frame are 11 gauge aluminum
Cover: Breakformed, hollow-metal design with 1" concealed fiberglass insulation, 3" beaded, overlapping flange, fully welded at corners, and internally reinforced for 40 psf (195 kg/m2) live load
Finish: Steel: Alkyd base red oxide primer; Aluminum: Mill finish
Latch: Positive hold/release mechanism controlled by a single UL-listed 165°F (74°C) fusible link. Designed to hold the cover closed against a 90 psf (438 kg/m2) uplift force.
Hinges: Heavy-duty pintle hinges with 3/8" Type 316 stainless steel hinge pins
Gasket: Extruded EPDM rubber gasket permanently adhered to the cover
Hardware: Steel: Engineered composite compression spring tubes. Steel compression springs with electrocoated acrylic finish. All other hardware is zinc plated/chromate sealed; Aluminum: Engineered composite compression spring tubes. Steel compression springs with electrocoated acrylic finish. Type 316 stainless steel hinges. All other hardware is zinc plated/chromate sealed.
Performance Rating: Comply with UL 790 Class A (burning brand test)

OPTIONS:
• Special Sizes - available on request


Click on CAD File icon below to access CAD drawings plus 3D and BIM models. (Note: Requires one-time registration at www.caddetails.com)

Item # Size W x H Shipping Wt. Lbs. CAD File
S-20SV Steel 36” x 30” 193
NB-20SV Steel 30” x 54” 260
L-20SV Steel 30” x 96” 423
S-40SV St Curb-Al Cvr 36” x 30” 160
NB-40SV St Curb-Al Cvr 30” x 54” 215
L-40SV St Curb-Al Cvr 30” x 96” 315
S-50SV Aluminum 36” x 30” 112
NB-50SV Aluminum 30” x 54” 155
L-50SV Aluminum 30” x 96” 240

Williams Brothers Corporation
Corporate Office
1330 Progress Drive
Front Royal, Virginia 22630

Western Distribution Center
Reno Nevada 

Toll Free Phone 800 255-5515
Phone 540 636-4444
Toll Free Fax 800 822-5001
Fax 540 636-4455

Toll Free Phone 800 255-5515
Phone 540 636-4444
Toll Free Fax 800 822-5001
Fax 540 636-4455

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