RD67 frame is made of composite aluminium profiles with 24 mm thick thermal break. The leaf is 67 mm thick with double steel skin filled with freon-free PU foam.
All windows and sidelights are triple-glazed with safety glass. You can choose clear, obscure, opaque or tinted glazing options. Etched effect custom glazing is available on request.

Triple rubber sealing contour provides perfect insulation. D-shape silicone rubber is not ageing or shrinking therefore door insulation does not change during a lifetime.