The 20 ft. Dome Structure is made using Structurally Insulated Panels (SIP) The interior will stay the same temperature in 50 degrees below, or 137 degrees above outside temperature’s. Size: 6.2m Diameter- 20 ft., 3.5m – 12 ft. Height, 60mm – 2.5″ Thickness occupies. 30sqm. 325 sq. ft. Reflective mirrored exterior finish. 1*Bedroom+1*Bathroom+ 1* Kitchen+ 325 sq.ft. Floor Partition is made by SPC wall panels, Water supply and drainage pipe, wc door and ceiling for washroom, , Marble water bar, Integral wash cabinet、Bath heater and Panel light、shower、flush toilet、and lights. Kitchen Door:16mm MFC; Cabinet: 16mm MFC; Hinge and Drawer: DTC Soft Close; countertop: quartz stone, stainless steel sink. Wood floor. For additional info, please purchase our catalog for additional information. Our products can be found at Safe Room Designs.