| Initial Resistance | 0.11 to 0.39 in WG |
| Image | Supplier | Item Code | Short Description |
|---|---|---|---|
| | Koch Filter Corp | KOCH 102-104-005 | 16x24x4 102104005 |
| | Koch Filter Corp | KOCH 102-714-025 | 16x20x4 102714025 |
| | Koch Filter Corp | KOCH 102-714-023 | 12x24x4 102714023 |
| | Koch Filter Corp | KOCH 102-714-026 | 16x25x4 102714026 |
| | Koch Filter Corp | KOCH 102-714-027 | 18x24x4 102714027 |
| | Koch Filter Corp | KOCH 102-714-028 | 20x20x4 102714028 |
| | Koch Filter Corp | KOCH 102-714-029 | 20x24x4 102714029 |
| | Koch Filter Corp | KOCH 102-714-030 | 20x25x4 102714030 |
| | Koch Filter Corp | KOCH 102-714-031 | 24x24x4 102714031 |
