Thats what I've been fitting. But do get all the end pieces the right way round when putting it up I've been cutting the mastic down the middle into 2 strips, one either side of the holesThomas panels now roll a gutter that is recessed at one end to allow for wide mastic tape. Find it much better and it sticks like s... to a blanket. You have to take care lining holes up as you only get one chance !
Much neater and you don’t get gutter, tools and yourself covered in sticky sealant
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