AluprofWindows & Doors

MB-79N

Versatile mid-range performer. Multiple variants for every need.

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Technical Specifications

Frame / Sash Depth

2.76" / 3.11" (70 / 79 mm)

U-Factor (best, SI)

0.11 (Uw 0.64, with Ug 0.5)

U-Factor (standard, double)

0.23 (Uw 1.31)

U-Factor (standard, triple)

0.17 (Uw 0.97)

Uf (frame, SI)

From 0.70 W/m2K

Max Glazing

2.48" (63 mm) - sash

Air Infiltration

Class 4 (EN 12207)

Water Resistance

E1950 windows / E4500 doors

Wind Load

Class C5/B5

Burglar Resistance

RC1 to RC3

Max Sash

2,700 x 1,700 mm, 353 lbs (160 kg)

Variants

E, ST, SI / US (hidden sash) / Casement / CSF

Overview

What makes the MB-79N
stand out.

The Aluprof MB-79N is a highly versatile 3-chamber system with four sub-families: standard inward-opening (E/ST/SI tiers), US concealed sash (hidden from outside), Casement (outward-opening with scissor or pivot hinges), and CSF (slim-frame casement for UK/Ireland). The SI variant with EPS insulating inserts achieves Uf from 0.70 and Uw from 0.64. Doors handle up to 200 kg with watertightness to E4500 - among the highest on the market. HVHZ hurricane-zone tested.

Learn more about thermally broken aluminum technology or compare European aluminum system providers.

Key Highlights

Four sub-families: Standard, US (hidden sash), Casement, CSF (slim-frame)
SI variant with EPS inserts: Uf from 0.70, Uw from 0.64 W/m2K
Door watertightness E4500 - among the highest on the market
US concealed sash: operable looks identical to fixed from outside
Casement: outward-opening up to 180 kg with scissor or pivot hinges
Hurricane-zone impact tested (ASTM E1996, TAS 201/202/203)

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Ideal For

Cost-effective residential new construction, multi-family developments, and commercial office buildings where you need strong performance without the premium-brand price tag.

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Consider an Alternative When

If you want outward-opening casement for the US market, look at the MB-79N CSF variant - same thermal platform, American-style operation. For higher-end projects, the MB-86 SI+ delivers premium aesthetics and performance.

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