20ft wide complete kits are made to last, we use heavy duty 1 5/8th tubing to insure that!

We made these kits with the backyard/hobby gardener in mind, all the way up to commercal nursurys. Someone that wants a full functioning greenhouse kit that looks great on there property. 


Free shipping on all kits.


Each kit comes complete with everything you need to assemble a COMPLETE KIT

- 1 5/8th commercal grade gavanized steel hoops and ground tubes

- 3 runs of 1 3/8th purlin

- Added truss for hoop support

- Sway bars/ wind bracing in all 4 corners

- Extremely durable woven top cover rated for 5 years

- Hot dipped galvanized Channel Lock and poly coated end wire to affix the poly to greenhouse

- All pre cut to fit endwalls covered in woven 5 year poly

                             -Front endwall with (2) 3x6.5' door made from 1.25x1.25 16 gauge square tubing.

                             -Back wall plain with no entry

- All hardware needed to assemble

-Cad blue prints and instructions included.


Roll up side kits fit with this greenhouse!


Note: the only thing you will need to finish house is double the length of your kit in base board. Most use a pressure treated 2x6 from local hardware store. 



  • Here at Northern Garden Supply we know that one size doesnt fit all. If there is a size your looking for. Or you have some other type of customiztion that you want to add to the house feel free to reach out to us @ 971-281-0428. We will be more than happy to help you along your greenhousse journey!