Every window has an identification label, which is found on the top part of the sash. The data plate enables easy product identification, and has details of product type, dimensions and production code.
A = Model type
B = Size code (based on old VELUX size codes)
C = Glazing spec
D = Production code (not needed for blinds)
If you have any questions, get in touch with our team who will be more than happy to help.