C – Parting bead. There are 2 parting beads positioned on both sides on the sash box, working vertically from top rated to base in between the sashes. Each half portion of a Ventrolla parting bead is made up of a draught-proofing method that faces the adjacent sash, forming a comfortable weather conditions seal.  https://horacei399qol4.ssnblog.com/profile