Skylux 160° CE met koepel en polyester opstand 30 20 met LM motor iWindow2 1000 x 1300 mm KQPV2000 MS2O 1800 1800 this well designed system is made this well designed system is made for fast Is this electric roof access with 30 20 PVC curb 1000 x 1900 mm Please note Double walled Acoustic value Rw