FeaturesBall bearing axial fan, service life minimum 50000 hr at 77 deg F (25 deg C) and 65% RHAirflow 11.8 cfm (20 cu-m/hr)-free blowingHigh impact plastic is highly weatherproof and-resistant to UV lightRemovable F5 filterLockable door in hoodFilter hood permanently fixed to enclosure from inside2 lead wires, 3.94 in (100 mm) long, with pressure clamps, 14 ga maximum (2.5 mm)Synthetic filter material, temperature-resistant to 212 deg F (100 deg C), self-extinguishing class F1, moisture-resistant to 100% RHFilter mat fine grade F5 to DIN EN779 filtering deg, 98 % of particles larger than 10 um (10 microns)UL 94H-B flammability rating, light gray plastic finishAluminum fan body, plastic impeller