Mil-spec mdl 3-S Shelter tent. Green polyester and nylon coated. DHS Systems Model 4XBT. Length: 21.7 ft. Width: 15.3 ft. Polygon floor shape. Fire resistant, water repellent and mildew resistant. Cloth weight: 7.000 ounces per square yard minimum and 11.000 ounces per square yard maximum. Length: 21.700 feet. Width: 15.300 feet.