Firstly I’m very happy with my skylight, the kitchen looks fantastic. First class service, and a good product. I went for the 1.5m by 3m design, be carefull with the metalwork with razor sharp edges and protect it as it can be easily damaged during storage and general building. We built the frame and followed the instructions which we all very easy to follow. With a little plastic trim inside 50mm angle the finish internally looks great I.e. white. Externally we went for the grey finish and with the height internally it made a big difference to the feel of the kitchen like a vaulted ceiling. Very strange painting inside the kitchen with your head above the old roof level! Overall the best money we could have spend and we are looking foreword now to sitting and relaxing. Would use express again. Thanks.