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375 Series Engineering/Performance Data
904 - Double Deflection Adjustable Aluminum Blade Grille For a 24" x 20" Duct Opening (front blades parallel to shortest dimension)
2 position adjustment for heating and cooling seasons
One piece stamped steel frame on most common sizes
Standard Features * Designed for return or exhaust applications * 3/16" holes on 1/4" staggered centers * Heavy gauge steel * Seismic support holes * 1x2
Adjustable Diffuser 950-16X12 Damper:Multi-Shutter Damper 375 Series Engineering/Performance DataStandard Features Adjustable aluminum airfoil blades oriented for 1 or 2 way airflow pattern Blades parallel to shortest dimension One piece stamped steel frame on most common sizes, alternate frame is extruded aluminum with signature line marks. Lever operated steel multi shutter damper Designed for ceiling or sidewall applications Nylon bushings on adj. blades prevent metal on metal rattle Countersunk mounting holes for flush appearance with color
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