Multifan Poly Ground Transition Housing Size:20" powder-coated metal casing for long

powder-coated metal casing for long life & a heavy-duty compressor

Each filter is shrink-wrapped

Coverage up to 13

200 BTU's on high setting

Broad-spectrum caterpillar control on more than 200 crops

Multifan Poly Ground Transition Housing Size:20" powder-coated metal casing for longIncludes Hood, Shutter and Necessary Hardware. Multifan's durable poly housing is designed for ventilation over pump out housings. Use it in conjunction with the Multifan Q style Panel Fan (sold separately). The opening size indicates the size of the hole in the pit cover. Available in 3 Sizes: #10177 18 18" (Opening Size: 23 3 4" x 23 3 4") #10177 20 20" (Opening Size: 25 1 2" x 25 1 2") #10177 24 24" (Opening Size: 30 1 2" x 30 1 2")