MB 79N SI – High-performance window & door system with superior thermal insulation
The MB 79N SI system combines advanced technology and excellent thermal insulation. Also deliver energy-efficient, secure, and aesthetically appealing windows and doors. Designed for modern homes and buildings, this system ensures superior performance in all aspects.
Key features:
- Profile dimensions: 3 7⁄64 in for the window profile and 2 3⁄4 in for the window or door jamb, offering a compact yet durable design.
- Thermal inserts: Utilizes state-of-the-art technology with expanded polystyrene (EPS) inserts and a two-component, central gasket for superior insulation.
- Thermal insulation performance: Uf value from 0.146 Btu (IT)/hour/foot²/°F, ensuring excellent energy efficiency.
- Compatibility: Compatible with BERTRAND MB-86 and MB-104 Passive systems, using the same accessories and gaskets.
- Excellent kinematics: Facilitates the creation of narrow, opening windows and doors, providing seamless functionality.
Benefits of MB 79N SI:
- Energy efficient: Excellent thermal insulation reduces energy costs.
- Versatile design: Compatible with other BERTRAND systems for more design flexibility.
- Smooth operation: Features excellent kinematics for easy and smooth operation
The MB-79N it has been designed to outperform typical thermal insulation requirements. The MB-79 N series can be used to fabricate fixed, side-hung, hopper, tilt-and-turn, and hopper-and-slide windows.
MB79N Window with Infratherm Technology by Bertrand
Style and warmth with MB 79N SI – Bertrand – Windows & Doors

| Product | Type | SHGC | U-Factor | VT |
| MB 79 | Dual action (tilt&turn) | 0,13 – 0,45 | 0,20 – 0,32 | 0,24 – 0,59 |
| MB 79 | Awning window | 0,11 – 0,36 | 0,25 – 0,34 | 0,19 – 0,47 |
| MB 79 | Fix | 0,15 – 0,51 | 0,17 – 0,30 | 0,28 – 0,68 |
| MB 79 | Entrace door | 0,11 – 0,39 | 0,31 – 0,41 | 0,18 – 0,49 |
COLORS
Choose a color from our rich palette and shape the windows according to your ideas.
