SKU: 5591433484

Harbor Freight 10x12 Greenhouse Spacer Only Mod Kit

Sale price$38.69 Regular price$42.99
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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

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Description

Harbor Freight 10x12 Greenhouse Spacer Only Mod KitHarbor Freight Greenhouse Spacer Only Mod Kit Some of the items we designed and 3D printed for our greenhouse build. If you have already built your greenhouse and don't want to worry about your panels, then the Harbor Freight Greenhouse Spacer Only Mod Kit is what you need. View our youtube video for use of these items and other helpful tips during your build. Our video is very detailed and is separated into chapters for easy navigation. Everything in

Harbor Freight Greenhouse Spacer Only Mod Kit

 

Some of the items we designed and 3D printed for our greenhouse build.  If you have already built your greenhouse and don't want to worry about your panels, then the Harbor Freight Greenhouse Spacer Only Mod Kit is what you need.  View our youtube video for use of these items and other helpful tips during your build.  Our video is very detailed and is separated into chapters for easy navigation.

Everything in the full kit except the silicone tube tool.

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]

Other items used during our Harbor Freight 10x12 Greenhouse build are below in the form of Amazon links.

The following items are included in this kit.

60 - Center Panel Spacers
(patent pending)
Used secure center of the panels to the horizontal bars.*** 55 Total Needed ***
  • 4 Front Panels (none in the door panels)
  • 12 Left Side Panels
  • 15 Back Panels
  • 12 Right Side Panels
  • 12 Roof Panels (none in windows/vents)
70 - End Panel Spacers
(patent pending)
Used to secure 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)

Harbor Freight Greenhouse Spacer Only Mod Kit

Links to the other items we used in our build:

Qty Link
2 Glazing Clips 100 Pieces
9 Duck Brand Foam Weatherstrip
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

More Products Here

Disclaimer: We offer no warranties or guarantees that these items will prevent any damage to your greenhouse. It is understood that these items are used at your own risk and liability.  These pieces are small, 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: 5591433484

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4.3 ★★★★★
Based on 17 reviews
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Verified Purchase
Amanda Schepeler
Battle Creek, US
★★★★★ 5
Great product
Size: 50mm/2inch, Color: Black, Number of Items: 4
Works as described. Love that it came with a hole drill bit!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
M
Verified Purchase
MKR
Natrona Heights, US
★★★★★ 5
Desk grommet used on entertainment wall
Size: 50mm/2inch, Color: Black, Number of Items: 4, Size: 50mm/2inch, Color: Black, Number of Items: 4
I used this grommet for the entertainment center wall behind my TV and it looks good and works great. Came with all the tools I needed to cut the hole in the wall and install it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 8, 2025
J
Verified Purchase
Jamz-
Chelsea, US
★★★★★ 4
Looks good in desk
Size: 50mm/2inch, Color: Black, Number of Items: 2
Made nice clean hole and inserts look and work well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
P
Verified Purchase
Peter
Belleville, US
★★★★★ 5
Fits and works just as expected
Size: 50mm/2inch, Color: Black, Number of Items: 4
I bought these to provide a snug fit for an EV charging cable running through my garage wall. They worked perfectly to keep out drafts and crawly things. Highly recommended.
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Reviewed in the United States on May 1, 2026
T
Verified Purchase
Thomas G.
Lowell, US
★★★★★ 5
Worth the money!
Size: 50mm/2inch, Color: Black, Number of Items: 2
This kit is great. I bought this because I know that the seller paired the cutting tool to be the perfect size and it was! Not just that, but the hole cutter was well done and cut thru the 3 layers - laminate, plywood and particle board with ease. The only thing that I would do different, is go to 3" next time. 2" was very tight when running the 2 @ 120 volt cord ends through the cap.
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Reviewed in the United States on December 5, 2025

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