Measurement - how to order your door

Specify two dimensions - width W and height H of the opening in which you will install the folding door. Measure the distances between the surfaces to which the folding door elements will be screwed.

W1. Measure the "clear opening" width of the door frame i.e. the narrowest (measure top and bottom)

H. Measure the height - from the floor to the top, flat surface of the door frame (measure left and right)

The direction in which the door opens is irrelevant. The door can be positioned as desired by rotating it on installation: