Snap-Grow Extension Kit (Extension Kit only; Greenhouse not included)
Looking for a little more elbowroom in your Snap & Grow greenhouse? This easily assembled and attached 4ft. extension kit uses the same clear-as-glass, nearly unbreakable "SnapGlas™" polycarbonate panels that slide and lock into place and don't need any small clips or hardware to hold them together.
6 x 4 Extension Kit Fits 6 foot wide Poly-Tex Greenhouses
8 x 4 Extension Kit Fits 8 foot wide Poly-Tex Greenhouses