MB-79N SI+

The Domex MB-79N SI+ is a premium single and double leaf door system engineered for those who refuse to compromise on comfort, efficiency or design. Built to exceed increased thermal and acoustic standards, this door system delivers an exceptionally sealed environment — keeping heat in, noise out and the elements firmly where they belong.

At the heart of its performance is a sophisticated 3-chamber profile with a 70mm installation depth, working in harmony with three EPDM gaskets that create an airtight, weatherproof seal across every edge. Combined with an integrated threshold featuring a thermal break, the MB-79N SI+ eliminates cold bridging and ensures consistent indoor comfort throughout every season.

With an impressive thermal transmittance of Ud = 0.85 W/(m²K), this door is built for modern energy-efficient buildings where performance standards are high and expectations are even higher. Whether installed as a single or double leaf configuration, it adapts seamlessly to your architectural vision without ever sacrificing its technical integrity.