.... > ....Products > HVAC > Galvanized Duct, Pipe, Fittings and Elbows > Base Cans, Plenums, Filter Frames and Filter Bases > Furnace Plenums > Furnace Plenums – Standard – With Cap > Furnace Plenums - Standard - With Cap 47 Plenum > Duct Plenum With Cap, 47 in H