The greenhouse wasn't easy to build, but with patience and at least one friend, it's not too hard. Once assembled and tightened it is very sturdy and just what I was looking for!

The white dots on the plastic in my pics are just lime deposits on the outside from my lawn irrigation system. They scrub off.

As some others said: make sure everything is square and level. Start on a level platform. Don't full tighten screws until the end.

Pros: looks nice. Overall I like it.
Cons: parts not packaged well. Several parts were missing labels and/or had scratches and scuff marks. The raised foundation "˜wall' under the doorway has to be stepped over. They really should have made that flat. Roof window isn't sealed well.

Weather: no way will this thing hold up to strong winds. I'm going to add 600 pounds of anchor weight on each side and roof ties. Update.. I was able to add eye hooks and steel cables to tie the sides to my wood foundation. Now the sides of the greenhouse are rock solid when before it would wobble.

Update #2: It's been almost 2 years now and the greenhouse has survived multiple 60-70mph tropical storms in Florida with no issues. Tips: I made sure to build the greenhouse on a wooden platform (pressure treated wood, coated with sealant), plus attached metal wire to hook eyes (2 eyes on both side gutters with wire running down to 1 eye on the each side of the wood platform). I did NOT add any additional anchors but I do have 4 large plastic planters with lots of soil in the greenhouse. I think those plus the wooden platform and greenhouse itself are probably 400 pounds. The plastic on the greenhouse has not changed at all in the Florida sun. Sometimes I get green on the top of the roof but that's my fault for not cleaning it more often. I wish I had used way more sealant/stain on the wooden foundation. I put on 2-3 thin coats and it looks bad after almost 2 years due to all the rain. I'd put at least 8 coats on if I had to do it again.

Update #3 -- Survived being 50 miles from Hurricane Ian landfall. Sustained winds of 50 (non-stop for 14-15 hours). My pool enclosure (cage) was destroyed by falling tree limbs. I've since put the greenhouse on a wheeled platform (permanently attached). Not shown in the images but I've re-painted the base and wheel platform in hunter green.

Update 4: Probably my last update but I added the yellow straps when I had to go on vacation during hurricane season, not knowing if something bad would happen while i was away. i've also noticed that the top window hinge is weak over the years. That window has blown off during mild wind storms when I didn't have it locked down. I added a piano hinge about half the length of the window & centered. Anyhow, my wife misses having grass where this greenhouse sits so I'm tempted to get rid of it but she always says not to. Good luck to you all.

The booklet and video instructions are absolutely terrible. They need to redo it badly. Had to watch other people's videos on YouTube on how they did it. Also be aware that some parts have sticker labels, some engraved, and some are not marked at all. It is however a nice greenhouse. Got the 6x8, but I wouldn't recommend you spend over $550 on it. I saw the price jump to over $700 and I really don't think it's worth that much. I was able to put it together myself. I am only 5' and had to use a ladder. I would definitely recommend having help if you're able to though. Almost gave up and sent it back a few times. I had to go back and redo some parts because it wasn't clear in the booklet on the order of things sometimes. Some parts should be mentioned to do before something else, like having the top support of the walls done before putting up the walls at all, but it doesn't do that in the book.

I bought this for a more permanent replacement for one of those plastic tunnel ones that just wouldn't stop leaking at the seams. It was hard to find one at least 6x10..since I had a 7 x 16 but this was largest I could afford right now. The directions are almost 80 pages, because it is pictoral with many languages. First thing I did was remove all the non-English pages. I had looked at the manul before greenhouse arrived and was a bit intimidated, especially after looking at all the parts! I was easily able to do this by myself, but two people would make it much easier. I used a ladder, some bungie cords and some celophane tape as a substitute human (no talking back either!). It is also pretty handle to have a small pair of needlenose pliers to tighten some of the nuts. You also need caulk which isn't listed in supplies needed. Some of the directions weren't too clear, but overall they are well written. If you skip forward to see what happens next to whatever part you are confused about, it is more clear. I did have to disassemble a few parts, then reassemble them. They do give you extra hardware. The number tags on some pieces were missing or got wet from dew after I unpacked box, so best to rewrite numbers in black felt tip. They do a VERY good job of compressing the parts for shipping and that did cause some of my clear side panels and metal pieces to get scratched because they were crammed together. Depending on model you buy, there will be "extra" hardware holes as pieces are interchangeable in some places. So, no, you didn't forget a page, some holes just don't get used (which was a good thing since they were never going to line up!). I'm happy that I am done!!

Although, we loved our perfect sized green house, it was quite challenging to build. They need to work on redoing the guide book on how to build the green house. It was such a mess in understanding what parts goes where because when we put some parts together, we had take it apart again to put in another part in as we read the next instruction. The instruction organization sucks.
But, overall, it looks great and sturdy enough to stand a slight storm.