The VELUX flat roof access window CXP can be opened manually to an angle of 60 to allow easy roof access. The roof access window can easily be combined with a group of VELUX flat roof windows, CFP/CVP, without changing the outer appearance of the building. Please note this product is not compatible with VELUX flat roof blinds FMG, FMK and MSG. Properties Manually operated flat roof exit solution. Double glazed window with polycarbonate cover. Opening angle of approximately 60. Also avaliable in the following sizes: 1000mm x 1000mm and 900mm x 1200mm. Also avaliable with a clear polycarbonate cover. Excellent insulating value and sound reduction. Dimensions External frame size including kerb - 138cm x 138cm. Structural opening size - 120cm x 120cm.