Glazing: glass number, can double or triple.
Glass seal: the glass seal which protects against water penetration.
Sash design: the part of the window that contains the glass.
Glass strip: strips that provide the required contact pressure between the gaskets and glass.
Sealing levels: Two sealing levels maintain good thermal and noise insulation.
Steel reinforcement: metal components that ensure long-term stability.
Profile chambers: small air compartments inside the frame divided by thin walls, which provide strong thermal insulation and stabilize the window or door frame structure.