The new Snap and Grow 8" x 20" greenhouse couldn"t be more aptly named, The SmartLock connector system makes this hobby greenhouse one of the quickest and simplest on the market to set up, The tough, crystal-clear SnapGlas panels bring in a maximum amount of light that your plants will surely enjoy, Large, double-doors and an adjustable roof vent provide flexible ventilation, The 8" x 20" base size package provides plenty of head room and with the optional extension kit, it can lengthen as your needs grow, It truly is greenhouse gardening in a Snap, SnapGlass - Clear as glass, 100% UV protection and virtually unbreakable!, Fast set-up- The Snap and Grow assembles in about a day with minimal tools, Heavy-duty, corrosion resistant Aluminum frame, Fast and easy assembly using SmartLock connectors, Includes preassembled door and window with weatherstripping, Crystal clear SnapGlas polycarbonate panels are virtually unbreakable, Heavy-duty, corrosion resistant aluminum frame, Nearly 64 sq, ft of usable interior space and 8"-6" of headroom, Safe, No dangerous glass to break, Great for growing in all climates, Compact packaging, Width 8"- 1/2", Length 20"-1/2", Sidewall height 5"-3", Frame spacing 2", Height at apex 8"-61/2", Glazing clear, single-layer SnapGlas polycarbonate panels, Frame aluminum with rigid polypropylene SmartLock connectors, Ventilation (1) adjustable roof vent , SKU: PLYTXHM009