/ Product catalogue / Accessories / Filter Boxes / For Rectangular Ducts / FBK (rectangular) / FBK 500x300-5
| B | B1 | B2 | H | H1 | H2 | L |
|---|---|---|---|---|---|---|
| 19 3/4” | 20 1/2” | 21 1/4” | 11 3/4” | 12 5/8” | 13 3/8” | 23 5/8” |
