Backdraft Damper Horizontal Down 3570-40X16

Backdraft Damper Horizontal Down 3570-40X16h3. 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

14" * Soft White Options * Field installable Bowtie Damper (BD) * TVB - Thermal Vapor Blanket * HVD - Hinge Down Face

Double deflection transition box mount spiral pipe grille

800-495-0125

Blades are parallel to the longest dimension

Standard Features * Heavy duty honeycomb construction * Blades run parallel to longest dimension given * Gym Grade - includes welded core and extra supports for heavy duty application * Mounting holes for sidewall and ceiling application * Recessed screwdriver operated opposed blade damper to control air volume for positive balance of system * Soft White Options * No mounting holes * Tamper Proof Screws * Standard Color

Eighteen air patterns

Opposed Blade Damper

Concealed mounting holes

Installation Ring only

Note: Sizes are Listed Nominal Duct Opening

PERFORMANCE DATA 915 Series Engineering/Performance Data

Standard Features * 3510 - Vertical mount * 3520 - Horizontal mount air up * 3530 - Horizontal mount air down * Designed to open with negative or positive pressures for intake or exhaust air * Felt edge blades to hold noise to a minimum * Aluminum construction * Blade to blade linkage * 1/4" pivot pins in nylon busings * Maximum size 24 x 24 * Mill finish h3