Standard Furnace Plenum With CapStandard Furnace Plenum, 18-1/2 x 21-3/4 in, 48 in HDescriptionECCO Manufacturing™ Standard Furnace Plenum With Cap, 18-1/2 x 21-3/4 in Fitting, 48 in Height
ECCO Manufacturing, Standard Furnace Plenum, 010440, 18-1/2 x 21-3/4in
