| Initial Resistance | 0.08 to 0.23 in WG |
| Image | Supplier | Item Code | Short Description |
|---|---|---|---|
| | Koch Filter Corp | KOCH 102-701-023 | 12x24x4 102701023 |
| | Koch Filter Corp | KOCH 102-701-025 | 16x20x4 102701025 |
| | Koch Filter Corp | KOCH 102-701-027 | 18x24x4 102701027 |
| | Koch Filter Corp | KOCH 102-034-005 | 16x24x4 102034005 |
| | Koch Filter Corp | KOCH 102-701-026 | 16x25x4 102701026 |
| | Koch Filter Corp | KOCH 102-701-029 | 20x24x4 102701029 |
| | Koch Filter Corp | KOCH 102-701-030 | 20x25x4 102701030 |
| | Koch Filter Corp | KOCH 102-701-031 | 24x24x4 102701031 |
| | Koch Filter Corp | KOCH 102-701-028 | 20x20x4 102701028 |
| | Koch Filter Corp | KOCH 102-034-010 | 25x29x4 102034010 |
| | Koch Filter Corp | KOCH 102-701-024 | 15x20x4 102701024 |
