Rion Base Kit 4 ft. Extension for Greenhouse

Add 4 ft. to your Rion greenhouse footprint with this base extension kit. It’s constructed with the same heavy-duty U-shaped resin used to mold the beams that came with your original base kit. Filled with soil, these honeycomb-reinforced planks provide utmost stability for your greenhouse and at 5 in. high allow your structure to sit taller for more headroom to move about easily. Like all Rion products, the base extension kit assembles in a snap.