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Countersunk mounting holes with color matching Phillips Pozidriv screws
Center margins are mounted on the backside of the grille for a streamlined continuous look
904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 30" Duct Opening (front blades parallel to shortest dimension)
Access door with 1-3/8" deep steel roll formed frame
Spiral Pipe Diffuser with Transition Box SD34-30X8G Spiral Pipe Diameter:14" Countersunk mounting holes with colorSD34 Transition Box Spiral Pipe Grille (DOUBle Deflection) Standard Features Double deflection transition box mount spiral pipe grille Blades are parallel to the shortest dimension Allows for 4 way airflow adjustment Nylon bushings on adj. blades prevent metal on metal rattle Curved saddle with gasket provides airtight fit to spiral pipe Product sizes available to fit spiral pipe diameters 8 48." Spiral pipe diameter must be 4 larger than Height of
