G – Ventrolla Perimeter Sealing Program (VPSS). The Ventrolla Perimeter Sealing Process (VPSS) comprises many draught-proofing aspects that operate alongside one another to seal your complete perimeter with the sash window. These incorporate the sealing technique mounted above the very best sash, either within the sash by itself or in some parting bead https://charlesr258uvv1.goabroadblog.com/profile