SASH WINDOWS FUNDAMENTALS EXPLAINED

G – Ventrolla Perimeter Sealing System (VPSS). The Ventrolla Perimeter Sealing Technique (VPSS) comprises various draught-proofing aspects that do the job collectively to seal all the perimeter of your sash window. These include things like the sealing system set up earlier mentioned the best sash, possibly throughout the sash itself or in cer