Standard Features Sizes: 7' x 7' Rectangular 7½' x 7½' Rectangular 8' x 8' Rectangular 8' x 12' Rectangular 8' x 16' Rectangular 10' x 10' Rectangular 10' x 12' Rectangular 10' x 16' Rectangular 12' x 12' Rectangular 12' x 16' Rectangular Wall Panels: Plexi Windows: Sliding Windows Doors: Sliding Door Roof Panels: Metal Roof Solid Wood Roof Roof Strength: 70 lbs/ft² Live Load Sky Light: Plexi Dome