The Vac-U-Max Model 2120 central vacuum system collects debris directly into a 55-gallon drum. It features a 36-in. diameter filter housing with 230 sq. ft. of filter area, comprising a cloth-to-air ratio less than 3:1. A Teflon coating provides a slick filter surface that allows debris to release and prevents material build up and filter blinding. It uses a positive displacement pump driven by a severe-duty, three-phase electric motor to handle continuous heavy load factors.