C – Parting bead. There's two parting beads positioned on either side on the sash box, running vertically from best to base between the sashes. Each 50 % area of the Ventrolla parting bead is made up of a draught-proofing program that faces the adjacent sash, forming a snug temperature seal.  In the event https://paxtonqfseq.dgbloggers.com/36277245/sash-window-draught-proofing-options