G – Ventrolla Perimeter Sealing System (VPSS). The Ventrolla Perimeter Sealing Procedure (VPSS) comprises numerous draught-proofing features that operate with each other to seal your entire perimeter of your sash window. These include things like the sealing program mounted earlier mentioned the top sash, possibly within the sash by itself or in certain https://sandram923dwo7.westexwiki.com/user