A – pulley. The sash wire serves as a system that facilitates the smooth opening and shutting of one's sashes by allowing for them being counterbalanced from each other.  G – Ventrolla Perimeter Sealing Technique (VPSS). The Ventrolla Perimeter Sealing Method (VPSS) comprises several draught-proofing aspects that perform collectively to seal the whole perimeter of https://chancemesgt.blogdon.net/the-5-second-trick-for-sash-windows-51788075