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SD34 - Transition Box Spiral Pipe Grille (DOUBle Deflection)
Step down core designed for 4-way uniform air distribution
916 Series Engineering/Performance Data
904 - Double Deflection Adjustable Aluminum Blade Grille For a 24" x 4" Duct Opening (front blades parallel to shortest dimension)
Diffuser 850-6X4 Accessories SD34 - Transition Box SpiralStandard Features 2 way register with stiffened 1 2" fan shaped louvers for silent operation For ceiling or sidewall applications Lever operated multi shutter damper All component parts, rivets, linkage and handle enclosed in valve to assure trouble free operation Countersunk mounting holes for flush appearance with color matching Phillips Pozidriv screws Rust resistant pre coat with durable powder finish Soft White Options w Lever Operated Opposed
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