4" intake flange. Great for small cold frames up to 20' x 96'. Exchanges air in a 100 cu. ft. room in less than 2 minutes. Flange Type: 3 hole round.Motor Hp: 1/40 th. Amperage Draw: 0.93
4" intake flange. For medium inflation jobs and exhausting air outside.Exchanges air in a 200 cu. ft. room in 2 minutes. Flange Type: 4 hole square.Motor Hp: 1/80 th. Amperage Draw: 0.5
4" intake flange. For large inflation jobs and exhausting air outside. Exchanges air in an 800 cu. ft. room in 4.5 minutes.Flange Type: 4 hole square.Motor Hp: 1/80 th. Amperage Draw: 0.5
4" intake flange. For fan powered air cooling on larger lights and jobs and air exhausting. Exchanges air in a 1200 cu. ft. room in 5 minutes.Flange Type: 4 hole square. Motor Hp: 1/33 th. Amperage Draw: 1.1
4" intake flange. For extra large air cooling jobs and air exhausting. Exchanges air in a 2200 cu. ft. room in 5 minutes.Flange Type: 6 hole rectangular. Motor Hp: 1/40 th. Amperage Draw: 2.2