Top fill HEPA
I converted a bottom fill to a top fill and instead of using the standard "A" bags I buy the Hoover Platinum "Q" bags and after a slight trim with a small knife on both sides of the seal membrane these work great and hold more. I have even fit and had these fill up properly with a little tucking on a bottom fill "C" style outer bag after changing it's tube/bellows to a top fill. Growing up with two Convertible Specails they always spilled dirt from the bottom fill bags back down onto the bottom plate and onto the floor when carrying up and down stairs and were a mess to change and clean the dirt and odor from the huge dirty prophylactic on the fill tube. Never understood the idea behind the design, but it is history.