.... > ....Products > HVAC > Galvanized Duct, Pipe, Fittings and Elbows > Base Cans, Plenums, Filter Frames and Filter Bases > Filter Bases > Filter Bases - 1"-2" > Filter Base, 16 x 25 in, 28-5/8 in L, 17-5/8 in W, 4 in H