Basic greenhouse is all you need to start your garden early. The plans include a list of all the materials you need to build, a set of measured drawings, instructions, plus plans for the potting benches shown inside. Heavy plastic sheeting is to be used for the "glass", making your job easier, but the greenhouse no less effective. Standard lumber sizes. Size of the finished greenhouse is 8' long, 5' wide, and 6.5' tall at the highest.