WSO 20 Mist Collector, exterior housing of the mist collector shall be constructed of 14 gauge using bolted and welded sub-assemblies and is designed for 10” water gauge. The unit shall be supplied complete with cleanable first stage filter, pleated high efficiency synthetic media cartridge second stage filter designed specifically for straight oil mist collection, and third stage HEPA795% DOP filter. The filter retention mechanism shall be included. This will center the cartridge, lock it in place, and force a tight seal between the gasket and the tubesheet. First and second stage filters are serviced through a hinged access door with oil resistant gasketing and a 1/4 -turn compression latch, which creates a knife edge seal around the entire door perimeter.