Donaldson Torit Downflo Dust Collector, Model DFT4-32. The dust collector’s EZ Ultra-Web II Filter Area has an estimated up to 8,128 sq.ft. of filtration surface area with (32) cartridge filters, estimated 8,100-20,300 cfm, 16 valves, a square design with a rotary airlock discharge. Serial number is hard to read but it appears to be IG503688-001. Disassembled parts overall sizes: Dust Collector-Overall Size 88”W (with fittings) x 84”D x 118”H (with fittings), Legs Overall Size 86”W x 185”H, Manifold Overall Size 80”W x 19”D x 35”H, Pyramidal Bottom Overall Size 79”W x 86”D x 96”H. Unit is missing blower. No controls or fan.