iWindow Vast Platdakraam 50x50 cm Insulation Glass:double glazing HR++ (1.0 W m²K) iWindow2 Installing an openable Skylux iDome Installing an openable Skylux iDome with PVC curb 20 00 EP with blackout blind 0400 x 0700 mm is not an everyday chore Is this electric roof access with 16 00 PVC curb 1000 x 1600 mm Roof opening = daylight size the solution you are looking for maximum light entry Available with HR++ (1