The early ordering period was a bit vague and I subsequently made a near terminal error as I misinterpreted the written part of the order. The units did not come as I expected even though I thought I had explained each edge detail required using the various glazing vision detail drawings on the net. - a simple sketch on the final order form would alleviate this issue. Also you should promote more or double question any customer who doesn't order a kerb top trim because from the top and bottom these make the panels look very smart. - thanks for fitting an emergency delivery of these to site!!! Apart from that - on time, spot on to measure, installation team were truly excellent and the quality and style of these panels is simply brilliant which is why I am already a second returning customer and for my next project will certainly choose Rooflight company again!