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Retainer cables are provided on sizes 12" and larger to allow the inner cones to hang securely while adjusting the diffuser
Heavy gauge steel construction
904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 14" Duct Opening(front blades parallel to shortest dimension)
Holds up to a 2" filter (not included) with filter retention tabs (FG2)
Spiral Pipe Diffuser with Transition Box SD34-30X10G Step Down Ceiling Diffuser Retainer cables are provided onSD34 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
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