internal_area Internal area (m²) 0.0
ridge_height Building height (m, to the top of the ridge) 3.04
roof_overhang Roof overhang 0.2
roof_area Roof area (m²) 63.6
side_wall_height Side wall height (m) 2.3
external_wall_surface External wall area (m²) 68.0
warranty Warranty 60 months