I remember one thread a long time ago about some folks who built their Harbor Freight in their garage, then loaded it onto a trailer to move to the foundation. They also installed the panels before loading it on to the trailer, so it had plenty of wind resistance. The wind caught it and tumbled it off the trailer, even though they were only going a short distance. I don't think it did much damage, but I'm sure it was exciting.

An untethered Harbor Freight greenhouse with the panels installed is rather like a giant box kite, so your plan to move just the frame (without panels installed) sounds wise to me.

We've assembled a wooden foundation from treated 2 x 12s & 4 x 6s, as suggested in the instructions. This thing is so heavy that we'll need to use our Kubota's FEL & recovery straps to position it on the level pad site....... Paid $240 for the GH & the foundation (with galvanized hardware) has already exceeded the cost of the GH........ LOL!

Please forgive me for being a broken record, but in case you haven't already read it elsewhere, consider adding at least one self-tapping metal screw through the poly panel and into the metal frame. Siliconing in the panels should be extra insurance too, against panel loss in a bad wind, but I'm not sure what happens to the strength of silicone after years of exposure to heat, sun, and cold...?

Panel loss (which often leads to frame damage) is probably the biggest problem these HF kits have, if only built per the confusing manual, so I tend to get a little naggy/worried. ;-)

Best of luck and keep us posted on how things go!

Looks like it's going to take both my DH & I to put this thing together.... It's a bit awkward for one person. I'd like to get it done this week end. We got 12" of snow today here in NE Kansas..... Thank God for heated shops!

It doesn't happen often, but I have known folks whose kits were missing a critical part. It can take a long time (like, months) for Harbor Freight to send you a missing part, if it's not a common part they stock for quick shipping.

My blog deals with the 10 x 12, which requires a little extra bracing due to be very sturdy in winds. I also recommend the addition of self-piercing screws to anchor each panel to the frame, but these supplies are easily purchased at any big box store.

Some folks find extra panel clips are helpful to secure the panels for the 10x12 (I did.) I'm not sure if extra clips are needed for the 6x8, and maybe somebody who has built the 6x8 will chime in.

If you do need extra panel clips, you can order them through the 800 number on the manual, and those ship quickly.

Another thing you can do, while you're waiting for spring, is to seal the ends of the wall and roof poly panels with tape. Some folks do this, some don't. The idea is to prevent dust, spiders, bugs, mildew, and green goo from forming in the open channels at the ends of the panels. I used aluminum tape from Lowes on mine (shown in blog below.) It lasted a few years before peeling off in my climate, and then I replaced it with clear duct tape. Charley's Greenhouse Supply sells panel tape specifically made for this purpose, and if you look around on the internet you may find other products.

My climate is very dry so I don't have problems with mildew or green stuff growing in the channels, but I do get teeny spider webs which catch dirt in the last few inches of the panel, if I don't seal them. So, just a thought, if you're looking for things to do. ;-)

I bought a used 6X8 HFGH and moved it with no problems. Right now its in my garage waiting for the weather to break.

Here is some more information I found on making it more secure.

I hope you enjoy it!

Rodco, nice job, did you use anything to keep the aluminum from coming in contact with the pressure treated lumber? Also, is that a urinal?

I did not caulk my panels in place, because I like to be able to remove them if needed. So, my solution was extra clips and screws, but Saturn3600 (above) used both extra clips and caulk, on his or her 6x8 greenhouse.

There used to be more frequent threads around here, years ago, about Harbor Freight disasters, back before people knew to take a few extra steps to make the panels and foundation more secure. Here's one, for example.
Greenhouse Disaster HFGH 10x12

You're the only one who can decide if it's worth the extra $9.99 plus shipping, for a package of 72 clips. To me, a little extra insurance seems like a no-brainer. Even if I lived in a climate that did not have uniformly high winds, I would not want to risk the loss of my greenhouse, or plants, but that's just me. An unusual gust of wind or errant windstorm can happen anywhere, even if it's not the norm.

You can order extra clips by calling the 1-800 number on your Harbor Freight manual. For the 6x8 greenhouse, Harbor Freight uses the part number 46 for the panel clips. The SKU number is SKU number 27339, for a set of 72 clips, $9.99.

Hope this helps, I know some of these decisions can be confusing. I sleep better if I err on the side of stability and safety (I really hate surprises.)

I think they usually ship the clips pretty quickly.