These requirements cover air filter units of both washable and throw-away types for removal of dust and other airborne particles from air circulated mechanically in equipment and systems.

ULC 111
Original price was: $240.00.$120.00Current price is: $120.00.
Standard Method of Fire Tests For Air Filter Units (CAN/ULC S111-13)
Underwriters Laboratories of Canada , 12/01/2013