Aluminum external door system with 30 mm depth termal break, placed in the middle of the section, with identical profiles for both internal and external side.
Locking mechanisms and hinges are fixed in the middle of the profile, hooked to internal and external profiles.
The dimension of thermal break avoid problems of differential deformation between external and internal aluminum profiles of sash, in presence of high temperature outside.
No issues in working of locking mechanisms even when thermal differential up to 50°C.
Installation of panels made of polyurethane and aluminum sheet is made with a mix of glue and mechanical retention.