Five layer, 7 gallon HEPA style replacement bag for current VacuMaid models SR52, SR52H, SR760, SR800, all VacuMaid Garage Vacs and Valet ATQ300. This paper bag filter is an alternate bag for the AstroVac models: SR36C, SR36, SR50, SR52. Replacement for the following models: H-1P, P70, SR36, SR38, P80, H2, P73, P75, MK-IP, MK-XXIIIBP. Replace at no more than ½ full or when lack of suction is noticed. Can also be used in DC500 and DC800 dirt canister. When flat, bag measures 27" x 12".