MB-79N SI — Mid-Tier Thermal-Break Aluminium Window
ALUMINIUM — SI MID-TIER
MB-79N SI — Mid-Tier Thermal-Break Aluminium Window
MB-79N SI sits one tier below the 86N — a 79 mm Aluprof profile with super-insulated thermal break, achieving Uw 0.9 W/m²K. The sweet spot of aluminium thermal performance and price for typical residential and light-commercial use.
Specifications
Engineering Details
Thermal break design
Internal polyamide thermal break separates outer and inner aluminium profiles — eliminates the cold-bridge effect of single-piece aluminium frames.
Maintenance-free aluminium
Powder-coated or anodized aluminium does not rot, warp, or require periodic refinishing. Coatings backed by 25-year warranty.
Custom RAL colors
Any RAL color available in matte, satin, or gloss finishes. Same color inside and outside, or contrasting interior/exterior.
Larger sashes possible
Aluminium’s structural rigidity supports larger panes than PVC — patio doors and floor-to-ceiling glazing without intermediate mullions.
Architectural-grade hardware
Concealed hinges, multi-point locking, anti-lift hardware as standard. RC1/RC2/RC3 security upgrades available.
25-year frame warranty
Frame integrity warranted for 25 years. Surface finish warranty 15 years. Drutex/Aluprof manufacturing standards.
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Why undefined?
MB-79N SI is the most commonly-specified Aluprof window line — strong enough thermally for energy-code compliance in Atlantic Canada, deep enough to accept triple glazing, but priced significantly below the 86N SI. Specify it on contemporary residential builds where the design brief calls for aluminium aesthetics but the budget does not justify the 86N premium.
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Tell us your sizes, glazing preferences, color/finish, and quantities — we will come back with a full quote including delivery across Atlantic Canada.
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