20"w X 10"h Aluminum Adjustabl
30"w X 6"h Steel Return Air Gr
20" X 30" Steel Return Air Fil
14" X 14" Steel Return Air Fil
24" X 24 Steel Return Air Filter Gr
National Laboratory Notebook, 4 X 4 Quad
14"w X 4"h Steel Return Air Gr
10"w X 10"h Adjustable Air Sup