“The Easy-Roll fast door is the suitable one for inner holes and to divide different atmospheres with low pressure drafts and reduced access lights (up to 3m. width). It is the ideal one to replace the awkward layered curtains and P.V.C. swing doors. The construction of the outside frame has been simplified and is formed by a couple of white lacquered sheet side guides which bear the aluminium shaft where the curtain is rolled up. This structure system needs a solid fixing.