I purchased a 12x8 Magnum 6mm polycarbonate greenhouse and wish I hadn’t bothered. My husband and I have put a greenhouse together in the past which was fine so we thought this wouldn’t be a problem. Big mistake! The instructions are absolutely atrocious. The pictures are cheap photocopies and are not clear. There are many steps completely missing so you need to be able to second guess how it should go together. It’s not good quality, the bolts are cheap and nasty and we are now going to have to try and silicone the 4 corners as it leaks. The design is absolutely useless. I could never recommend a Halls greenhouse, look elsewhere and spend your hard earned money with a company that produces better quality products.