UV film
Ultraviolet light is the principal cause of rot damage; Sun-X filters applied onto the existing glass will eliminate this problem. Fade damage is caused by a combination of ultraviolet light (40%), together with the sun's light and heat (50%). Sun-X museum-grade ultraviolet filters are the result of considerable research over many years, and are approved by the Scientific Department of the National Gallery for UV transmission, colour rendering and colour temperature tests. This has resulted in SUN-X selecting and manufacturing the most efficient, durable and optically clear range of filters available.