Metaal opstand 40x160 cm KOM15 0 0500 2300 Daylight size 1000 x 1000 Daylight size 1000 x 1000 mm Roof opening Equal to daylight size Passage opening 79 x 100 cm Number of actuators Single actuator Number of walls Double walled Insulation value (Ug value) 0 0 openable version with clear glass 1050 x 1050 mm Standard: 40 mm rockwool insulation (U value: 0 there are options with a burglar proof grid