The Aluxor Windfast The Aluxor Windfast The Aluxor Windfast is a vertical screen awning in a cassette of 105mm x 105mm. It is custom made in sizes up to 3m wide and 3m high. The system works using a tension spring to ensure a perfect fabric tension in every position. The Aluxor Windfast is available in white or silver powdercoat colours and a variety of fabrics to compliment the awning. The wide guide channel design eliminates the gap between the fabric and channel, so assuring optimal sunlight protection.