Alton Octagonal Greenhouse 6ft. x 8ft. The Alton Octagonal Greenhouse 6ft x 8ft offers extra width and opens the doors to all sorts of possibilities. Optional double doors are available so you can create an opening that enables easy wheelchair or wheelbarrow access. This Octagonal cedar greenhouse is large enough to accommodate a roof vent and the extra width provides more space for growing. As with all Alton Octagonal greenhouses the 6x8 benefits from an eaves height over 6ft, offering a more comfortable gardening experience.  |