DETAILS, FICTION AND SASH WINDOW DRAUGHT PROOFING

C – Parting bead. There are two parting beads positioned on both sides on the sash box, functioning vertically from prime to base in between the sashes. Every single half section of a Ventrolla parting bead has a draught-proofing procedure that faces the adjacent sash, forming a comfortable temperature seal. The sash excess weight is linked