C – Parting bead. There are two parting beads positioned on both sides in the sash box, jogging vertically from major to base in between the sashes. Each and every fifty percent part of the Ventrolla parting bead has a draught-proofing procedure that faces the adjacent sash, forming a cosy weather conditions seal.  Any https://valeriusz749coy4.blogcudinti.com/profile