Aluminum Airfoil Blade Double Deflection Diffuser 903-24X20 Damper:Opposed Damper enclosed in valve to assure

enclosed in valve to assure trouble-free operation

Opposed Blade Damper standard on 4" widths

Narrow ceiling grid dimples for 9/16" T-Rails

904 - Double Deflection Adjustable Aluminum Blade Grille For a 18" x 14" Duct Opening (front blades parallel to shortest dimension)

Product sizes available to fit spiral pipe diameter 8” – 48

Aluminum Airfoil Blade Double Deflection Diffuser 903-24X20 Damper:Opposed Damper enclosed in valve to assureStandard 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