My original hatch had a pvc frame and a pvc hatch lid that you had to push into the loft to gain entry. It was a real pain and I wanted a good metal alternative. Unfortunately my hatch opening didn?t match any stock sizes and I didn?t want the hassle of building out the existing frame. The bespoke hatch I got made by Jupitor Blue fitted perfectly and the whole job was completed in 30 minutes. Only niggles were the operating pole, which came slightly bent as it had been packed outside the polystyrene packed hatch and only had the outer cardboard for protection. I suggest this should be bubble wrapped at least to prevent this sort of transit damage. The locking mechanism catch also slightly touched the wooden joist as it was a fraction long but I quickest rectified this by rebating a small notch in the joist by drilling a series of small holes. Other than these niggles it is a well made hatch. I would recommend any diy fitters do what I did and buy 2 x 12? clamps to hold the frame in situ so you can screw the hatching place securely. The clamps I got from screwfix had plastic jaws and for only ?6.30 each held the frame securely without marking it whilst I fixed all the screws in place. All in all this was a good hatch to buy