Return Air Drops, Plenums and Boxes

Southwark FSB1L-1428-12H Furnace Support Box, 14-1/2 Inch W x 28 Inch D x 12 Inch H

Southwark 1221B Cold Air Boot, 20 x 10 - 20 x 16 Inch, Sheet Metal

SW1074122048 #1074 12-1/2X20X48 Plenum with Top (66G48H)

Southwark 1074 Style A Plenum with Top, Sheet Metal, 20 Inch W x 48 Inch H x 16-1/2 Inch D

Southwark FB Furnace Support Box, 14 x 25 x 18 Inch, 14-1/2 Inch W x 18 Inch H

Southwark FB Furnace Support Box, 16 x 25 x 1 Inch, 17-1/2 Inch W x 18 Inch H

HCP FB072-ACAB-12 #072 Heating & Cooling Products Furnace Box A Cabinet 12" Tall w/ 1" Filter Rack, Galvanized, Steel

Southwark 1074 Style A Plenum, Sheet Metal, 20 Inch W x 48 Inch H x 20 Inch D

FB072-BCAB-12 #072 Heating & Cooling Products Furnace Box B Cabinet 12" Tall w/ 1" Filter Rack, Galvanized, Steel

Southwark FB Furnace Support Box with Filter Slot, 20 x 25 x 1 Inch, 21 Inch W x 18 -1/2 Inch H

HCP FB072-CCAB-12 #072 Heating & Cooling Products Furnace Box C Cabinet 12" Tall w/ 1" Filter Rack, Galvanized, Steel

FB072-DCAB-12 #072 Heating & Cooling Products Furnace Box D Cabinet 12" Tall w/ 1" Filter Rack, Galvanized, Steel