Airex Industries, Pulse Dust Collector.
FARR Dust Collector, Model GS4 GOLD SERIES, Explosion Proof Door, 4 Cartridges, 2,473 CFM Rating
Torit Easy-Trunk Small Portable Dust Collector, S/N 17161989-l-1-1,750CFM, 1.5HP
Hydrotron Model HWF-7-110-25, Ducted Wet Type Dust Collector.