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Ships within 48 hours · Estimated delivery Nov 3 - Nov 8
Options (must specify when ordering)
Non-standard size collar (available in 6" through 20")
904 Series Performance Data
stair risers
Standard Features * Steel construction * Generous free area for quiet operation * Lever operated single-blade damper * Removable face and damper * Tension wings to stabilize damper * Available in 15"
Aluminum Airfoil Blade Double Deflection Diffuser 903-16X4 Accessories Options (must specify when ordering)Standard 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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