If you're looking for the low-tool convenience and upscale beauty of our Snap and Grow Greenhouse, but need a little more head room, the Snapand Grow 8' x 8' is the right fit for you. You'll get the same SmartLock connector system, tough crystal-clear SnapGlas panels, and heavy duty aluminum frame. You'll also benefit from the large, double doors and adjustable roof vent, which provide ample ventilation. Additional 4' sections are available when you're ready to expand.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.Rust-proof design Plastic and aluminum parts.Fast & easy assembly using SmartLock connectors.Includes preassembled door & 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 & 8'-6" of headroom.Safe. No dangerous glass to break.Great for growing in all climatesCompact packaging. Single, 146lb - 83"x26"x9" carton box.Width: 8'- 1/2".Length: 8'-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.