The large size is for installation on the ground or on a very strong roof. It should have a permit and installation design from a civil engineer and your local zoning board. If you intend to install it on the ground, consider ordering our water-weighted bases instead of pouring concrete into the ground. Standard color is white inside and outside. Please see spec sheets on the information page or at www.flowerturbines.com/customers for details. Dump load included.Batteries not included. Batteries should be 120 volts.