Anetta, so sorry, what an error on my part! Also, my 10x12 greenhouse is the Model 93358 version. But understanding came slowly sometimes. Last year I used Velcro to attach the film on the inside, but eventually the sticky backs of the Velcro let loose and the poly film fell. Hi LisaB,I have not built the 6x8 size greenhouse myself, but here is a link to a good tutorial on that size:Building and Improving the Harbor Freight 6x8 GreenhouseI think you may also find more information, including some YouTube videos, if you Google Harbor Freight 6x8 Greenhouse.There are a lot of similarities, and you will probably be able to use much of the info in this blog, as well, in spite of the size difference (the parts numbers are totally different, though.) Glad you ordered extra clips. I don't hold much hope for the quality of my HF kit but I was able to get it for $570. I have since moved and the rear lot needs to be terraced before I can even attempt to build the kit. I have just now come upon another challenge: My subdivision rules restrict me to no more than 8 ft high on a greenhouse. Jan 21, 2012 - Great step-by-step photo guide to assembly of both sizes of the Harbor Freight greenhouse. Hi Mark,I had the same problem (see part four of this blog, and scroll down to "The Loose Window Problem." So, when the base is assembled, using the corner connectors and the end connectors, do you mean that one side of the base measures 12' 1", and the other side of the base measures 12'? Each panel in the side of the greenhouse is only 1' 11" wide, so if you remove a panel to make an opening for your new door, you won’t have a standard size door opening (meaning you’ll likely be building your own door somehow. Time to mess with them.So if the greenhouse is a free standing fixture, it has to be no higher than 7 feet.But what is you extended the foundation on the rear of your house and then built the greenhouse as part of your house?Then it is not free standing but an extension of your house. The distance center to center between the holes is 1 3/16".I haven't graphed this out on paper, but we think it's very close.If it's not easy for you to fabricate these, you could try calling HF to see if this is a part they stock for immediate shipment. Maybe, there is a typo in there, somewhere?It's at this point I throw up my hands, and say, let's just make darned sure things are plumb and square as we go, and I think everything will work out fine. It was on sale for $149 but they were out at the store. As silly as it may sound, having a greenhouse that was equal in beauty and function was the goal. Anyway, thanks again for taking the time to document your experiences with. But, these small curves really do go behind the edge of the thinner poly panels, and that is what Harbor Freight is trying to show you in the (unclear) illustration C on page 16 of the Harbor Freight manual.One trick I've learned is to put the clip in place this way...hold the clip so the center curve will come in contact with the panel. ), Building our Harbor Freight 10' x 12' Greenhouse, Building and Improving the Harbor Freight 6x8 Greenhouse, Part One: Basic Info, Harbor Freight 10' by 12', Part Four: Assembling the Roof, Windows, and Doors, Part Five: Modifying the Frame for Strength. I hope this is a bit helpful.Sheri. This got me through in about five minutes (who knows if this will hold true for you, though. Hi Nora, based on your description, I'm not clear on what's happening with your vents...but I do admit they are probably my least favorite part of the Harbor Freight greenhouse.Mine opened and closed fine, after some fiddling with the fit, but I found a strong wind could lift them open an inch or so, even when they were locked down in the tightest "closed" position. Thank the lord for wonderful people like you who take the time to make putting a project of this magnitude seem not so overwhelming. !I'm just getting the walls up and all is going well until I got to the place where parts 24 and 25 join together above the opening. The areas I do have some gripes with (the polycarbonate panels need more UV resistance, and my roof window vents would not stay down snug in the wind) haven't been changed in the new version either. I found the instructions to be quite good. I hope this very rambly answer is a little helpful.mudhouse, Hello rcarrcrew,I'll throw in my two bits as I concentrated on just the building without getting too much into the extra's. )Hope all continues to go well for you.Sheri, Hi,I just want to say a big Thank you for taking the time to put this blog together. The assembly instructions are sorely lacking in many details. We don't find the frame to be too flimsy, after the modifications suggested by others (and repeated here.) Their product had a ten year warranty, and was truly UV-protected. Since I bought the greenhouse that side - including the panels last longer that... I hired a guy to put together type 31 ( size & material ) did you use to secure roofing... Is wood, you may be inviting problems with this problem, but I just bought greenhouse! Guide to assembly of both sizes of the small panels from greenhouse Megastore find alarming new roof just! Wind storm yesterday and with panels already missing from the last storm, 'm! 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