78 mm frame and sash
6-chamber PVC system.
The Cortizo A78 PVC window combines a Class A construction—with 3-mm inner and outer walls—with high thermal and acoustic insulation. Manufactured by ROSH with ROTO hardware, it is ideal for residential projects seeking comfort, durability, and contemporary design.
A window designed for demanding projects: high insulation, sleek appearance, and precision craftsmanship.
Close-up view and technical cross-section to understand the system's construction.
Choose the layout that best suits your intended use, available space, and architectural style.
Glazing: 28 / 44 mm · Hardware: ROTO
Each item is custom-made by ROSH and then inspected before being prepared for shipment.
© Copyright 2026 by ROSH: Manufacturer of windows, doors, and roller shutters.
A six-chamber PVC system designed to combine insulation, natural light, and contemporary styling.
Choose the layout that best suits your needs, the available space, and the architectural style.
Each system is custom-built at our factory, from the cutting of the profiles to the final inspection.
Limits based on official Cortizo A78 technical data. The final dimensions must always be verified based on the project’s type, glazing, hardware, and exposure.
6-chamber PVC system.
Double or triple glazing, depending on the desired configuration.
Maximum dimensions of the sash · maximum weight 150 kg.
Maximum dimensions of the sash · maximum weight 150 kg.
Maximum dimensions of the sash · maximum weight 160 kg.
French-style, tilt-and-turn, folding, tilt-and-slide, and casement.