Roof filter fans and roof exhaust filters are used in enclosures from which warm air must be diverted due to increased heat development. They are used to expel warm air from within the enclosure. Alternatively, the roof exhaust filter provides passive ventilation. Utilizes four small axial fans instead of one large one to improve reliability. Flow rate of 177 to 338 cfm.
| Part. No. | Operating voltage | Air volume, free blowing (w/ G3 filter mat) | Mounting depth | Enclosure cut-out | Weight (approx.) |
| 01860.0-00 | 230VAC, 50Hz¹ | 177 cfm (300m³/h) | 2.0” (52mm) | 9.8 x 9.8” | 7.3 lbs. (3.3kg) |
| 01860.0-02 | 120VAC, 60Hz | 203 cfm (345m³/h) | 2.0” (52mm) | 9.8 x 9.8” | 7.3 lbs. (3.3kg) |
| 01861.0-00 | 230VAC, 50Hz¹ | 294 cfm (500m³/h) | 4.2” (107mm) | 9.8 x 9.8” | 5.7 lbs. (2.6kg) |
| 01861.0-02 | 120VAC, 60Hz | 338 cfm (575m³/h) | 4.2” (107mm) | 9.8 x 9.8” | 5.7 lbs. (2.6kg) |

