Aluminum Airfoil Blade Double Deflection Diffuser 903-36X4 Commercial One piece curved frame with

One piece curved frame with gasket fits flush to spiral pipe

Lever operated steel multi-shutter damper

Designed for return applications and as a vented access door to equipment

Standard Features * Lightweight Aluminum vent louver * This is a larger version of the 4901 series * Flush face * Spring clip mounting * Able to withstand wet and corrosive environments * Easily installed using only a high grade silicon caulk * Satin Anodized finish Options * IS - Insect screen * Standard Color or Designer Color Finish available on this product

stair risers

Aluminum Airfoil Blade Double Deflection Diffuser 903-36X4 Commercial One piece curved frame withStandard Features Double deflection surface mount grille with adjustable airfoil blades Front blades parallel to longest dimension, back blades parallel to the shortest dimension Extruded aluminum surface mount frame with signature line marks Provides 4 way air flow on one plane Nylon bushings on adj. blades prevent metal on metal rattle Countersunk mounting holes with color matching Phillips Pozidriv screws Rust resistant pre coat with durable powder