Secco OS2 75 is a high-end steel profile window and door system designed for modern and historic architecture. The system features ultra-slim sightlines and versatile structural options.
Steel profiles allow for large window and door designs while maintaining slim profiles and high wind resistance.
Various opening types – including side-hung, tilt-and-turn, pivot, folding, and lift-and-slide elements – while maintaining uniform, minimalist profile sightlines across the facade. The system is engineered for maximum light transmittance and architectural cohesion.
Ultra-slim visible profiles from 27 mm maximize the glass area, flooding the space with natural light.
The system is designed to replicate the proportions of historic steel windows while meeting modern energy efficiency and airtightness standards.