Skylux 160° CE met koepel en polyester opstand 30 20 met dubbele LM motor iDome 1000 x 2000 mm KCB AHOHH 0600 0900 Installing an electric roof access Installing an electric roof access skylight with 16 00 PVC curb 1000 x 2200 mm Roof opening = daylight size is not an everyday chore Roof opening = 1200 x 1800 mm is not an everyday chore single walled) Insulation value (Ug value) 0 62% in combination with a single walled opal acrylic skylight