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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
One piece stamped steel frame on most common sizes
Holds up to a 1" filter (not included) with filter retention tabs (FG1)
Concealed mounting holes
916 Series Engineering/Performance Data
Heavy gauge cold roll steel
Spiral Pipe Diffuser with Transition Box SD52-20X8G Finish:Designer Color - Cement Gray One piece stamped steel frameSD52 Transition Box Spiral Pipe Grille (Single Deflection) Standard Features Single deflection transition box mount spiral pipe grille Blades are parallel to the shortest dimension Allows for 2 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 width of
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