Rion 4 foot base extension for each GH40M2 - BASE-44M2
If you are not sure about securing the greenhouse to the ground, we suggest purchasing one of the Rion bases. This base extension kit is made for use with the 40 Series Greenhouses, the extension kit (GH40M2), and the greenhouse base (BASE-44). Note: 1 base extension kit is needed per GH40M2. This can be confusing. Here are the parts you need to have a base for your greenhouse: GH44 - 1 BASE-44 GH46 - 1 BASE-44 and 1 BASE-44M2 GH48 - 1 BASE-44 and 2 BASE-44M2's GH4-10 - 1 BASE-44 and 3 BASE-44M2's GH4-12 - 1 BASE-44 and 4 BASE-44M2's WARRANTY: 7 YEARS AGAINST MANUFACTURER'S DEFECTS.