MB-86
Aluprof's flagship. The all-rounder for premium projects.
Technical Specifications
Frame / Sash Depth
3.39" (86 mm)
U-Factor (best)
0.11 (Uw 0.60, AERO + Ug 0.5)
Uf (frame)
ST 1.60 / SI 1.00 / AERO 0.74 W/m2K
Max Glazing
2.76" (70 mm) - AERO sash
Air Infiltration
Class 4 (EN 12207)
Water Resistance
E1200 windows / E4500 doors
Wind Load
Class C5
Burglar Resistance
Up to RC4
Variants
ST, SI, AERO / N (flush) / US (hidden sash) / EI (fire)
Operation
Tilt & turn, casement, fixed, pivot, entrance door
Overview
What makes the MB-86
stand out.
The MB-86 is Aluprof's most popular high-performance system - the backbone of thousands of residential and commercial projects across Europe. The 86 mm frame depth houses multi-chamber profiles with polyamide thermal breaks; the SI variant adds foam inserts, while the AERO fills the thermal break zone with aerogel for Uw as low as 0.60 W/m2K. The family spans windows, entrance doors, pivot doors, curtain-wall inserts, and the MB-86 Fold Line bifold. The MB-86N offers a flush exterior sash for a clean facade, and the MB-86US hides the sash entirely behind the frame.
Key Highlights
- Aluprof's best-selling premium system worldwide
- Three thermal tiers: ST (standard), SI (foam inserts), AERO (aerogel - Uf 0.74)
- MB-86N: flush exterior sash for a clean modern facade
- MB-86US: fully concealed sash - operable looks like fixed from outside
- MB-86 EI: 30-minute fire-rated variant for commercial and escape routes
- Full RAL color range with dual-color capability, concealed or visible hardware
Ideal For
Premium residential new construction, custom homes with high energy targets, and commercial mixed-use buildings where you need architect-grade aesthetics and flexibility across window, door, and pivot configurations.
Consider an Alternative When
For tighter budgets with similar performance, the MB-79N SI delivers strong insulation at a lower cost. If you need the absolute best Reynaers pedigree, the MasterLine 8 is the equivalent premium competitor.
Related Systems
You might also consider.
Interested in the MB-86?
Send me your window schedule and I'll price MB-86 units for your project - full spec, DDP to your job site, within 48 hours.