Photo 1 of HVAC Plenum Ceiling Box 14X14X10 (14"X14" Square to 10" Round) with Drywall Flange

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Photo 1 of HVAC Plenum Ceiling Box 14X14X10 (14"X14" Square to 10" Round) with Drywall Flange Photo 2 of HVAC Plenum Ceiling Box 14X14X10 (14"X14" Square to 10" Round) with Drywall Flange Photo 3 of HVAC Plenum Ceiling Box 14X14X10 (14"X14" Square to 10" Round) with Drywall Flange