21 in. Air Handler Return Plenum Plates (Pair) Details 21 in. Universal Plenum Plates $17.32 $10.56 Add to Cart
18.5 in. Air Handler Return Plenum Plates (Pair) Details 18.5 in. Universal Plenum Plates $19.98 $12.19 Add to Cart
17.5 in. Air Handler Return Plenum Plates (Pair) Details 17.5 in. Universal Plenum Plates $23.31 $14.22 Add to Cart
Air Handler Supply Plenum B Width 12.13 in. X 16.5 in. X 36 in. Details 12.13 in. X 16.5 in. X 36 in. $122.54 $74.75 Add to Cart
Air Handler Supply Plenum C Width 12.13 in. X 21.5 in. X 36 in. Not AMSTD Details 12.13 in. X 21.5 in. X 36 in. $130.54 $79.63 Add to Cart
D Width Furnace Supply Plenum Details D width furnace supply plenum HxLxW 35" x 22" x 24" $153.18 $93.44 Add to Cart
B Width Universal Return Box 18 in. x 22 in. x 22.5 in. Details 18 in. x 22 in. x 22.5 in. $274.39 $167.38 Add to Cart
C&D Width Universal Return Box 22 in. x 23.5 in. x 22.5 in. Details 22 in x 23.5 in. x 22.5 in. $290.38 $177.13 Add to Cart
A Width Furnace Return Plenum With Filter Rack Details A width furnace return plenum with filter rack HxLxW 23” x 28.5” x 14.5” $319.09 $194.65 Add to Cart