MB-79N
Versatile mid-range performer. Multiple variants for every need.
Technical Specifications
Frame / Sash Depth
2.76" / 3.11" (70 / 79 mm)
U-Factor (best)
0.11 (Uw 0.64, SI + Ug 0.5)
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. Florida Building Code hurricane-tested.
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
- Florida hurricane tested (ASTM, TAS 201/202/203)
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.
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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Interested in the MB-79N?
Send me your window schedule and I'll price MB-79N units for your project - full spec, DDP to your job site, within 48 hours.