Pay in 4 interest-free payments of $52.01 Learn more
Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
Airfoil blades individually adjustable on 3/4" centers
Standard Features * 4000 - door core grille with single frame * 4100 - door core grille with additional loose frame *
One piece curved frame with gasket fits flush to spiral pipe
Center margins are mounted on the backside of the grille for a streamlined continuous look
Maximum dimension 60x60 single
Backdraft Vertical Mount 3550-26X14 Specialty Products Airfoil blades individually adjustable onh3. Standard Features * 3550 Vertical mount * 3560 Horizontal mount air up * 3570 Horizontal mount air down * 3580 Round sizes available 5" to 24" * All non motorized backdraft dampers * Dampers are opened by air pressure differential and closed by gravity * 16 gauge channel frame with 26 gauge galvanized blades * Out of airstream linkage * Blades are vee stiffened 26 gauge for strength and stability * Square steel pivot pins * Nylon bushings * Single
US$ 89.99
US$ 211.00
US$ 75.00
US$ 56.00
US$ 22.99
US$ 28.00
