Skylux 160° CE met koepel en polyester opstand 50 20 met LM motor iWindow2 1000 x 1300 mm KKB HHHH 0450 1050 Daylight size 800 x 2800 Daylight size 800 x 2800 mm Roof opening 1000 x 3000 mm Passage opening 80 x 240 cm Number of actuators Double actuator Is this Skylux openable iDome with PVC curb 20 00 EP 1300 x 1300 mm the product you are looking for Double walled Acoustic value Rw