Key specifications
Material: Aluminum
Frame depth: 2 3/4 in (70 mm)
Sash depth: approx. 3 1/8 in (79 mm)
Glazing capacity: approx. 0.47–2.07 in (12–52.5 mm)
Fixed glazing capacity: approx. 0.06–1.75 in (1.5–44.5 mm)
Chambers: 3
Gaskets: 2
Maximum size: up to approx. 106.3 x 51.2 in (2700 x 1300 mm)
Maximum sash weight: approx. 353 lb (160 kg)
Application & opening style
Confirmed during quotation.
Available thermal variants
- E — Economical variant. One-component central gasket.
- ST — Enhanced thermal variant. Two-component central gasket.
- SI — Highest-insulation variant. EPS insulating inserts in the thermal-break zone plus a two-component central gasket.
Colors & Finishes
Aluminum finish direction for Aluprof systems.
- Full RAL K7 powder-coat palette
- Custom powder colors available on request
Glazing compatibility
Compatibility with specific double, triple or quadruple pane units is confirmed during project quoting.
Related systems
Aluminum windows · All window systems · Window glazing · European vs American windows
“US” in MB-79N US denotes the concealed/hidden sash system designation — not a United States–specific product version.
Performance values, dimensions and available documentation vary by size, glazing, opening type and configuration. Certified ratings shown above apply only to the specific listed configuration. Final system availability and project-specific documentation are confirmed during quotation.