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Heavy duty steel honeycomb construction
Diffuser available in sizes 6×6 through 20×20
Opposed Blade Damper standard on 4" widths
904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 18" Duct Opening (front blades parallel to shortest dimension)
enclosed in valve to assure trouble-free operation
Aluminum Airfoil Blade Double Deflection Diffuser 903-24X20 Damper:Opposed Damper Heavy duty steel honeycomb constructionStandard 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
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