renovatiekader pvc met inserts voor lichtkoepel of platdakraam 1600 x 1600 mm KQPV2000 EKS2 1000 2000 or heatstop versions or heatstop versions 98 33 50 26 Opaal (O O) 0 where the original curb can be preserved without the need to remove or significantly modify the existing roof structure