Aluminum Window and Door System - FORTIS 75

Brand: Ersaş Systems

Ersaş Systems combines high thermal performance and modern design in a single system with Fortis 75, the most advanced member of the Fortis series. Developed for cold climate regions, this system offers durability, aesthetic appearance, and functionality in all weather conditions. Designed with a minimal number of corner blocks, the structure reduces stock, storage, and shipping costs thanks to the use of common blocks across all series. Standard machine park settings speed up the production process, while the Euro and PVC wing structure ensures compatibility with accessories from all mechanism brands. Fortis 75 is a reliable solution for commercial, industrial, and residential projects with its high wind resistance, acoustic performance, and superior insulation properties. Ersaş Systems quality brings together strength, elegance, and technology in a single structure.


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Residential blocks, office buildings, factories, administrative buildings, airports, and all small, medium, and large-scale buildings for various purposes can be applied.

Frame Depth: 75 mm
Sash Depth: 82,8 mm
Profile Wall Thickness: 1,5 - 1,8 mm
Maximum Glass Thickness: 58 mm
Insulation Bars: 34 mm
Thermal Insulation Value (Uf): 2,16 W/m ²K - 2,34 W/m ² K
Resistance to Design Wind Load: Class C5 (2000 Pa)
Water Tightness: Class E 1500 (1500 Pa)
Air Permeability: Class 4 (600 Pa)
Acoustic Performance: 42 dB

Qualicoat, TSE, ISO 9001, ISO 10002, ISO 14001, ISO 45001, ISO 50001