Description Flat Roof Window is equipped with a double glazed unit 4H-14-33.4T which has laminated internal glass and is Anti-Burglary P4A Class. The external dome is made of durable polycarbonate. Special coatings on the inner and outer of the dome surface protect against UV radiation. Heat transmittance co-efficient for the whole window is U=1.2 W/m2K. (glass U-Value 1.1W/m²K). Acoustic rating 35Db (-1.-3). All D_C and D_F Secure window achieves anti-burglary RC2 class as per EN1627. Can be used on roofs with pitches between 0 – 15°.
