Special Features:

Insert barrier type; designed for nom 3 ft w x 7 ft h door opening; 1600 fpm air velocity measired 3 ft above floor; electric motor drive; 220/440 v; w/angle adjustment for 15 degrees from vertical; departure from cited document: as modified by elec characteristics and wd of door opening

Properties:

A nonpositive displacement mechanical device having an axial or centrifugal fan impeller inclosed within a housing with an exhaust nozzle and baffles. It is designed to move air across an open entrance to provide an air barrier to minimize heat loss or gain and repel flying insects. It may include a means of heating the exhaustible air.