PVC Opstand 100x190 cm Curb type:Splayed curb 35 30 35 cm high for skylight flat roof window 1000 x 1900 Please note! Roof opening = 1300 x 2200 Dubbelwandig Dubbelwandig Roof opening = 900 x 1700 mm the solution you are looking for Tailor the design to your specific project: choose a sloped version to capture the maximum amount of daylight and distribute it evenly throughout the space you choose flawless and completely watertight installation of your skylight or flat roof window