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Standard Features * Return air T-Bar lay-in filter grille for 20" x 20" duct * Removable louvered 20 gauge steel face * 20" x 20" x 1" filter (not included) * Square collar (20x20) * 2x2 panel * Seismic support holes * Soft White Options * Square to round No Labor Collar
PERFORMANCE DATA 600TFG Series Engineering/Performance Data
Lever operated multi-shutter damper
425 Series Engineering/Performance Data
Aluminum Airfoil Blade Double Deflection Diffuser 904-20X20 Step Down Ceiling Diffuser Standard Features * Return air904 Double Deflection Adjustable Aluminum Blade Grille For a 20" x 20" Duct Opening (front blades parallel to shortest dimension) Standard Features Double deflection surface mount grille with adjustable airfoil blades Front blades parallel to shortest dimension, back blades parallel to longest 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
