The PVC core of this hybrid window gives it the superior airtightness, thermal insulation and structural strength properties typical of multichamber designs. And the aluminium cladding is renowned for its handsome looks and great colour matching flexibility.

• Our multichamber design reduces thermal exchange and the extra enclosed air space
• Built to be ultra airtight, they’re among the best in the industry
• PVC profiles are welded, making them tougher than mechanically assembled products
• This design has more internal walls, the joints are extra-strong
• Products made with these frames boast one of the lowest glass replacement rates on the market