SKU: 70660522897

Harbor Freight 10x12 Greenhouse Modification

Sale price$44.99 Regular price$49.99
Save 10%

Pay in installments of $12.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 10 - Aug 15

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Harbor Freight 10x12 Greenhouse ModificationHarbor Freight 10x12 Greenhouse Modification (patent pending) Video Here: youtube. com thirtyonecrafts Some of the items we designed and 3D printed for our greenhouse build. The Harbor Freight Greenhouse Modification is perfect if you haven't built your greenhouse yet. For a step by step guide on how to use these items and other helpful tips during your build, check out our YouTube video. Our video is very detailed and is separated into chapters for

Harbor Freight 10x12 Greenhouse Modification

 

(patent pending)
 Video Here: youtube.com/thirtyonecrafts

Some of the items we designed and 3D printed for our greenhouse build.  The Harbor Freight Greenhouse Modification is perfect if you haven't built your greenhouse yet.  For a step-by-step guide on how to use these items and other helpful tips during your build, check out our YouTube video.  Our video is very detailed and is separated into chapters for easy navigation.

 

Our build video: https://youtu.be/_5JKp4crMHE

If you have already constructed your greenhouse and you want to avoid worrying about the panels, we offer a spacer-only mod kit.

Are you needing to just inject silicone into your panel?  We have that tool too!

Quantities are based on the Harbor Freight 10x12 greenhouse product.  If you need different quantities or something else custom, please send an email to [email protected]

Below are Amazon links for the additional items we used during the construction of our Harbor Freight 10x12 Greenhouse.

All the items we designed and 3D printed for our greenhouse build.

This 3D printed kit will take around 24 hours to complete. If it is currently out of stock, we will have more available soon. We appreciate your patience and understanding.

Quantities are based on the Harbor Freight 10x12 greenhouse product.
If you need different quantities or something else custom, please send an email to [email protected]

This kit includes the following items.

60 - Center Panel Spacers

(Patent Pending)

Used when securing the center of panels to the horizontal bars.

*** 55 Total Needed ***

  • 4 Front Panels (none in the door panels)
  • 12 Roof Panels (none in windows/vents)
  • 15 Back Panels
  • 12 Left Panels
  • 12 Right Panels

 

70 - End Panel Spacers

(Patent Pending)

Used for securing the ends of panels to thin strips on the frame.

*** 61 Total Needed ***

  • 7 Front Panels
  • 6 Back Panels (2 at bottom center either side of base channel splice)
  • 12 Left Side Panels
  • 12 Right Side Panels
  • 24 Roof Panels (none in windows/vents)

Silicone Tube Tip Tool

(Patent Pending)

Used to help put silicone into the ends of the panels, takes a little practice

We send 2 so you don't have to worry about cleaning them up, just toss them in the trash.

  • 2- Silicone Tube Tip Tool

Harbor Freight Greenhouse Modification

Links to the other items we used in our build:

Qty Link
2 Glazing Clips 100 Pieces
9 Duck Brand Foam Weather-strip
10 Frost King 1/2" Rope Backer
2 #8 x 3/4" Self Piercing Screws
2 #8x1/2" neoprene Washers
1 Gorilla Clear Silicone Caulk 6pk

Disclaimer:  We offer no warranties nor guarantees that these items will prevent any damage to your greenhouse.  It is also understood that these items will be used at your own risk and liability.  These pieces are small, so please keep them away from small children.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 70660522897

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 28 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
T
Verified Purchase
Timothy johnson
Lowell, US
★★★★★ 5
Awesome shirt
Color: Light Pink, Size: 3X-Large
I love this shirt awesome I brought three of them the other 2 are arriving today Thankyou coofandy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
N
Verified Purchase
Nas
Houston, US
★★★★★ 1
Is this a joke?
Color: Cream, Size: Large, Color: Cream, Size: Large
Is this a joke? I just opened a package that was sold as new, but nowhere on the purchase did it say it was refurbished or used. It looks obviously worn, yet it was sold to me as new. This should have been given to me for free. There are permanent stains on it and fresh hair all around the neck area, and I don’t have hair — I’m bald. Please see the pictures and my video. I just opened the pack, and it looked refolded and packaged as if fresh from someone else’s laundry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
R
Verified Purchase
Ruby
Natrona Heights, US
★★★★★ 5
Buy it
If you're looking for a comfortable thick and nice turtle neck this is the one. It's nice and form fitting nice weight to it to keep you warm. But not to thick that you cant just wear it on a regular sunny day if you wanted. The design pattern Is also very nice. Can dress it up or down. I bought the black and then immediately bought the rust orange color for my friend once he tried on mine he wanted one immediately so I gifted him one. He loves it. Definitely worth the buy. Excellent quality. I bought a Large 5"11 165lbs
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 21, 2024
M
Verified Purchase
Make it Do!
Boise, US
★★★★★ 5
What you see is what you get!
Color: 01-black, Size: Large
Fits great, fabric is amazing, turtle neck fits tight, and the quality is amazing!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 11, 2026
S
Verified Purchase
SeanCeltiad
Boise, US
★★★★★ 4
A true turtleneck that retains a snug high neck.
Color: White, Size: X-Large
I've found this brand to have gotten better over the years as far as offering the American market what it needs in terms of realistic sizing. I only wish they'd realize that there are a lot of us who are long in the back and arms where my only choice is to go a size up and sacrifice a slim fit for sleeves that are long enough plus a back that doesn't go up past my waist just because I reach up for something, that and I like to be warm. So these are such nice quality turtlenecks that it's hard to complain about but maybe the company will read this. The snug neck stays up is plus number one since that's why I'm buying a full neck. They come with very nice weaves in the fabric, good enough for casual or formal wear. Finally the warmth you seek is there but I've worn them in what most would think isn't the right temp for a turtleneck. Also they have them in white! Yes, a lot of others just don't for reasons I can't fathom, and the pic you're seeing is accurate, these will form to your shape without being ridiculously thin material. Several washes later and they are as fine a garment as when I first wore them. I've only found one other brand that compares to these but it's much more expensive, COOFANDY is affordable in these times of expensive everything. Warm but also a lightweight shirt, I've gotten them really dirty with actual dirt and it washes out so well you'd never know it. Don't let my taking off one star stop you, try one yourself and you'll be coming back for more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 30, 2025

recommand products