| Item No. | Description | |
| GV1886 | 14 5/8" x 18" x 36" Plenum - 28ga | |
| GV2493 | 15" x 18" x 36" Plenum - 28 ga | |
| GV0465 | 17" x 17" x 36" Plenum - 28ga | |
| GV0474 | 18" x 20" x 36" Plenum - 28ga | |
| GV0499 | 18" x 22" x 36" Plenum - 28ga | |
| GV1910 | 18 1/4" x 21 5/8" x 36" Plenum - 28ga | |
| GV1722 | 18 1/2" x 23 1/2" x 36" Plenum - 28ga | |
| GV0468 | 19" x 19" x 36" Plenum - 28ga | |
| GV0500 | 20" x 22" x 36" Plenum - 28ga | |
| GV0477 | 20" x 20" x 36" Plenum - 28ga | |
| GV0520 | 20" x 24" x 36" Plenum - 28ga | |
| GV1721 | 20 1/2" x 23 1/2" x 36" Plenum - 28ga | |
| GV0546 | 20 3/4" x 30" x 36" Plenum - 28ga | |
| GV0503 | 22" x 22" x 36" Plenum - 28ga | |
| GV0559 | 22 1/4" x 47 1/2" x 36" Plenum - 28ga | |
| GV0547 | 24" x 30" x 36" Plenum - 28ga | |
| GV0544 | 24 1/4" x 29 1/2" x 36" Plenum - 28ga | |
| GV0554 | 25 1/2" x 32 1/4" x 36" Plenum - 28ga |
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