The following section explains how to measure a double-sash window.
CW Casement width
CH Casement height
WBE Lower edge
A Hindge Distance
If you activate the checkmark for all after each field after measuring the window sash, the dimensions will also be used for window sash b.
ATTENTION: You must specify the hinge side for the respective window sash.
Casement a: Hinge: left
Casement b: Hinge: right