I’m sorry I can only give this product three stars. It started with the wall panels being different length by about 1.5 cm. The drill points for the walls were not in line with the flanges that slotted the panels together, see step six onwards. Step 31 DRPM are too short. Step 32, brackets do not line up. Step 37, roof panels do not sit below the apparent top grove of the lower channel, part DRPM. The door assembly parts DRPD we’re too short and the screw points for parts DRMA and DRMW could not be lined up correctly for a flush finish. It is a lovely shed but am concerned it may leak due to poor sizeing of the parts. I have put this item on a level concrete base and am experienced with this type of construction. I expected a better product for the money, hopefully it won’t leak!