.... > ....Products > HVAC > Galvanized Duct, Pipe, Fittings and Elbows > Base Cans, Plenums, Filter Frames and Filter Bases > Furnace Plenums > Furnace Plenums – ½" Insulated – 3 Sided > 3-Sided Furnace Plenum, 16-1/2 x 20 in, 8 in H
