Backdraft Damper Horizontal Down 3570-26X20

Backdraft Damper Horizontal Down 3570-26X20h3. 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

Submittals and Performance Data

Square collar designed for 22" x 22" duct

904 - Double Deflection Adjustable Aluminum Blade Grille For a 42" x 18" Duct Opening (front blades parallel to shortest dimension)

Maintains horizontal airflow pattern

Designed for large volume air delivery

Holds up to 1" filter (not included)

Adjustable single deflection grille

Standard Features * Return air T-Bar lay-in filter grille for 20" x 20" duct * Removable louvered 20 gauge steel face * 20" x 20" x 1" filter (not included) * Square collar (20x20) * 2x2 panel * Seismic support holes * Soft White Options * Square to round No Labor Collar

Standard Features * Solid aluminum rotatable body * Excellent for spot heating and cooling difficult areas * Can move conditioned air from an inaccessible place to the work environment * Precision adjustable aluminum air flow exit plate * Double felt flange body seal to prevent air leakage * Closed cell neoprene felt mounting gasket * Easy adjustment of air flow by turn of a knob * Maximum rotation angle 33 to 42 in all directions * Corrosion resistant anodized finish Options: * 1205 - spot diffuser in panel mount

904 - Double Deflection Adjustable Aluminum Blade Grille For a 14" x 12" Duct Opening (front blades parallel to shortest dimension)

1/2" spacing dual angular louvers

Collar sizes available in 6”–10”