OS2 75 – Perfection in Every Detail
OS2 75 is the most advanced solution in the Secco family. It combines extremely slim profiles with outstanding thermal insulation performance. The system also offers the widest range of structural and opening options – from classic casement windows and lift-and-slide systems to monumental pivot doors and folding systems. It is a system designed for buildings that are meant to endure, impress, and protect – without compromise.
External system
Thermally insulated system with thermal break
KEY FEATURES
Installation depth: 75 mm- More than 40 profiles – the same range of options as OS2 65, with enhanced thermal performance
- Glass thickness: 34–47 mm (up to 50 mm)
- Double thermal break: polyamide and polyurethane
- Double overlap sealing and flipper gasket – high resistance to weather conditions
- Full range of opening options and structural types: tilt-and-turn, lift-and-slide, pivot, folding systems
- Two façade composition variants: 75.1 and 75.2 – sash configurations with different sightlines (different visible widths of sash profiles and floating mullions are possible)
Variant 75.1:
Offset glazing line, meaning there is no flush surface between the glass installed in the opening sash and the glass fixed directly in the frame.
Variant 75.2:
Possibility to achieve identical profile sightlines for opening sashes and fixed glazing. Flush glazing surfaces between opening elements and fixed glazing.
Regardless of whether the element is an opening window (sash) or fixed glazing, the profiles appear identical from the outside. This creates a harmonious façade design without visible differences in frame widths. The glazing in the fixed and opening sections lies in the same plane, eliminating offsets and emphasizing the modern, minimalist character of the construction.
PROFILE STRUCTURE
1. Rebate system with flipper gasket and double sealing
2. Composite structural thermal break: polyamide
3. Internal door closing gasket
4. Glazing up to 50 mm thick
5. Composite structural thermal break: polyurethane
6. Hardware groove
7. Glazing bead
8. Internal and external rebate
AVAILABLE MATERIALS
OS2 75 is the system for those who know exactly what they want: steel in its most complete form – warm, durable, beautiful, and ready for any architectural challenge.
Customize Your System
Choose the perfect glazing bead finish and explore the available hardware options:
Glazing Beads as a Design Element
Available in square and triangular profiles, finished to match the frame
Slim, Geometric Hinges Visually and Color-Matched with the Frame
Available hinge types: two-part and three-part
Vitruvio Handles
Tronca, Quadra, Tonda, Ovale – geometric steel jewellery
