Pressure Relief HD 3530-20X10 Specialty Products with color matching Phillips posi-drive

with color matching Phillips posi-drive screws * All component parts

Standard Features * Step down core design allowing for uniform air distribution * Four way air diffusion * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft white Options * 100 - diffuser only (no damper) * 100 D - diffuser with steel multi-shutter damper * 100 O - diffuser with steel lever operated opposed blade damper * No Labor Collar * Standard Color or Designer Color Finish available on this product

Perforated Face Grille

Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1/2" square zinc plated steel pivot pins * 1/2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3

Standard Features * Designed for return or exhaust applications * 3/16" holes on 1/4" staggered centers * Heavy gauge steel * Seismic support holes * 1x2

Pressure Relief HD 3530-20X10 Specialty Products with color matching Phillips posi-driveh3. 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. Options * Sleeve variations * Mounting flange * Adjustable counter balance to adjust various