This greenhouse provides a helpful growing environment for your plants. While protecting your plants from some unexpected weather events or pests, it also assists in creating a microclimate zone allowing you to grow crops that may be more challenging for your area. Zippered windows provide easy access to your crops, control over humidity, ventilation, and temperature regulation. 2 zippered ends are designed for multiple units to be linked together in a series. Unit measures 4’ long x 4’ wide x 31.5" in height.