C – Parting bead. There are 2 parting beads positioned on each side with the sash box, managing vertically from major to bottom involving the sashes. Each individual 50 % section of a Ventrolla parting bead is made up of a draught-proofing technique that faces the adjacent sash, forming a snug temperature seal.  Just https://garden-pathway-lights91244.activosblog.com/34666594/top-latest-five-sash-window-draught-proofing-urban-news