The 75 B -“BLADES ABOVE AIR STREAM”The model 75 B is a Lloyd Industries “out of stream” fire damper. 75 B Fire Dampers are approved for use in walls, floors, and partitions with fire resistance ratings less than 2 hours. The 75 B Fire Damper carries a 1-1/2 hour UL fire damper label.
Type-B Fire Dampers are used when airflow or velocity in the duct is a concern. The stack of blades in the fire damper frame is out of the air stream. Compared to an Type-A damper, total square inches of free area in a Type-B damper is larger and the pressure drop is lower.
Fire Dampers B Technical Specifications
- FRAME: 22 ga. Galvanized Steel
- BLADE: 22 ga. Galvanized Steel
- CLOSURE SPRING: Negator Stainless Steel
- FUSIBLE LINK: 1650F
- MOUNTING: Horizontal or Vertical
- UL 555 Fire Resistance Rating
- Fire resistance rated 1-1/2 Hours
- Partitions materials rated 2 Hours or less
CSFM California State Fire Marshal
Fire Damper Listing (#3225-1417:102)
New York City (MEA listing #215-99-E)
75BH - 75B Fire Damper Horizontal
75BV - 75B Fire Damper Vertical
Manufacture Limited Warranty
Products manufactured by Lloyd Industries are warranted to be free from defects in material and workmanship for a period of 12 months after being installed or placed in service, but in no instance shall the period of warranty be longer than 18 months from the date of original shipment by Lloyd Industries.
Lloyd Industries warrants that it will furnish replacement material, or at its option, repair any product of its manufacture that is proven to Lloyd Industries satisfaction to be defective in material or workmanship during this described warranty period… [Click Here to Download Full Warranty]