sliding windows and doors United Kingdom

...You can select Durajoin's aluminium doors and windows in standard colours such as black, white, anthracite grey, or customize them with over 200 RAL colours to match your interior. We offer single-colour or dual-colour options. All our aluminium windows and doors are powder-coated. Product: Casement windows, Flush windows, Tilt and turn windows, Sash windows, Bay windows, Sliding patio doors, French doors, Bifold doors, Front doors, Single back doors, Roof lights, Skylights, Roof Lantern, Garage Doors.

... Germany. They have been tested for Air Permeability, Water Resistance, Security and Resistance to Wind Load. The framing of the Keller minimal windows sliding doors can be hidden to provide a minimalistic sliding door design that offers barely visible framing. They boast a vertical sightline of just 21mm, and the outer framing can be hidden behind internal plasterboard and external render. Unlike some ‘slim’ sliding systems you do not get any visible frame above the finished floor level. This creates a full floor-to-ceiling glass finish.