C – Parting bead. There are 2 parting beads positioned on either side of the sash box, managing vertically from leading to bottom amongst the sashes. Each and every 50 percent section of a Ventrolla parting bead consists of a draught-proofing system that faces the adjacent sash, forming a cosy temperature seal.  Provided that https://dennisw000oes7.blog-ezine.com/profile