The Sapphire Mayfair range of projection screens are truly a work of art. We use only the best quality materials and each one is tested at length before leaving the factory. Although it is difficult to convey the screen quality online. The triple laminated glass fibre surface is designed to lay flat with no curls extending into the viewing area. The gain is 1:1 which we consider best for modern projectors which have plenty of brightness. The viewing angle is very wide and the black border all around marks the image and improves your perception of the contrast ratio. The screen fabric has black backing meaning you can place the screen in front of a window and no light will come though the projector screen fabric.