In this collection, you will find straight curbs that are perfect for a simple installation with a daylight size equal to the roof opening. Choose the 20/00 EP curb for better insulation and easy interior finishing, where you need an extra 4 cm roof opening for a seamless connection. If your roof insulation is higher than 5 cm, combine any Skylux PVC curb with our stackable 20/00 EP-S curb. Please note: the affordable 16/00 curb is only suitable for plastic skylights and not compatible with glass flat roof windows.