You can include optional benches for easy potting, window ventilation to control internal temperatures  or an electric package for fans and lighting. The outer dimensions and base wall can be built at various sizes as well as adding an enclosed storage shed section. Paint the Duratemp siding with the color of your choice, or cover the exterior with stained cedar shingles.  Add window ventilation to control internal temperatures or an electric package for fans and lighting. The outer dimensions and base wall can be built in various sizes.