Used Donaldson Torit Auto-Lok Prefilter Housing - 1 X 1
All 16 gauge galvanized sheet construction. Removable tandem side filter access to hold multiple ASHRAE filters. Installed with magnehelic gauge kit option. 4"Ø sleeve connection for duct. Can handle up to 2000CFM. Unit dimensions: 27" X 27" X 32" long. Unit weight: 59 lbs. Shipping Info: 36" X 36" X 32" 91 lbs.