Monticello 4 foot extension kit is specifically designed for the Monticello line of greenhouses. As your gardening greenhouse needs grow so can your greenhouse. The 4 foot extension kit allows for the expansion of your greenhouse. The design and installation is simple and takes under 2 hours to assemble. Each 4 foot extension kit includes a 2' x 2' roof vent with automatic opener and gutters.

When ordering your extension kit, make sure that the color matches your existing greenhouse.