C – Parting bead. There are 2 parting beads positioned on either side of the sash box, functioning vertically from leading to bottom amongst the sashes. Every single 50 % area of the Ventrolla parting bead consists of a draught-proofing technique that faces the adjacent sash, forming a comfortable temperature seal.  Putting in successful https://eleanorv614mns2.gynoblog.com/profile