Skylux piramide acrylaat lichtkoepel 3 wandig pmma opaal pmma helder pmma opaal 1100 x 1100 mm KKB HH 0300 0800 Installing an electric roof access Installing an electric roof access skylight with 30 20 PVC curb 750 x 2250 mm Please note The Skylux® PVC adapter frame with inserts 1500 x 1500 mm is extremely suitable for both complete and partial refurbishments of existing skylights