G – Ventrolla Perimeter Sealing System (VPSS). The Ventrolla Perimeter Sealing Technique (VPSS) comprises several draught-proofing elements that do the job jointly to seal the entire perimeter on the sash window. These involve the sealing program mounted previously mentioned the best sash, possibly throughout the sash alone or in certain parting bead struggling https://scottj518lbs4.theisblog.com/profile