G – Ventrolla Perimeter Sealing Process (VPSS). The Ventrolla Perimeter Sealing Method (VPSS) comprises several draught-proofing features that operate alongside one another to seal the complete perimeter on the sash window. These include the sealing program mounted previously mentioned the very best sash, both within the sash by itself or in some parting https://michaeld295apy5.qodsblog.com/profile