30" x 54" Automatic Smoke Vent - Steel - Bilco

NB-20SV 30" x 54" Automatic Smoke Vent - Steel - Bilco

The NB-20SV Automatic Smoke Vent - Steel has durable galvanized steel and a concealed fiberglass cover material that protects the building components and people inside it from the vicious smoke, heat, and gases from a fire.  A reliable single-leaf smoke vent is perfect for elevator shafts, stairways, or any area that requires smaller vents.  

NB-20SV's Thermolatch positive hold/release mechanism provides reliable vent operation in the presence of fire. This smoke vent automatically releases on the melting its fusible link, a handy feature if you talk about fire protection. 

Why install the NB-20SV?          

Affordable: The NB-20SV smoke vent also provides a cost-effective solution to address your smoke vent needs for your commercial building. In addition, this product is easy to install without special tools and requires no maintenance.      

Super-Durability: The NB-20SV smoke vent is tough and long-lasting with its galvanized steel build. No need to worry about physical damage with its 14 ga (2 mm) galvanized steel material with a 1" (25 mm) concealed fiberglass insulation and certified UL 793 and UL 790 Class A fire ratings.    

Variety: If you are looking for multiple product options, you can choose from NB-20SV 's various sizes that will surely fit your commercial building.     

Specifications:      

• Cover and frame: The cover and frame are 14 gauge (2 mm) G-90 paint bond galvanized steel.  
• Cover: Brakeformed, hollow-metal design with 1" (25 mm) concealed fiberglass insulation, 3" (76mm) beaded, overlapping flange, fully welded at corners, and internally reinforced for 40 psf (195 kg/m2) live load.  
• Curb: 12" (305mm) in height with integral cap flashing, 1" (25 mm) fiberboard insulation, fully welded at corners, and 3-1/2" (89mm) mounting flange with 7/16" holes (11mm) provided for securing the frame to the roof deck.  

• Gasket: An extruded EPDM rubber gasket permanently adhered to the curb.  
• Hinge: Heavy-duty pintle hinges with 3/8" (9 mm) hinge pins.  
• Latch: Positive hold/release mechanism controlled by a single UL-listed 165°F (74°C) fusible link with a different latching point for each cover. Designed to hold the covers closed against a 90 psf (438kg/m2) wind uplift force and provided with interior and exterior pull-release cables to manually open vent covers.  
• Hardware: Engineered composite compression spring tubes and steel compression springs packed in grease. All other hardware is zinc-plated/chromate sealed.  
• Operation: Compression springs enclosed in telescopic tubes open covers automatically against a ten psf (49 kg/m2) snow/wind load when released. Automatic hold-open arms lock the cover in the fully open position. The cover is supplied with a shock absorber to ensure a controlled opening rate.  

• UL Listings: UL-listed. Comply with UL 793 and UL 790 Class A (burning brand test)   

Call Us Today!    

Why Choose Access Doors and Panels? Because we are your reliable source of practical and handy access panels for your walls, ceilings, floors, and even your roofing system. We understand your access and security needs, so you can always talk to our expert product specialists and apply for credit! Call us at (800)-609-2917 and experience our excellent products and services!