100-pound steel DOT vertical LP (liquid propane) gas cylinder. Tank may be purged, and will be indicated by a bright pink sticker. Ideal for temporary heating, portable cooking, fueling propane appliances, and other outdoor applications. Holds 22.9 gallons of propane. Conforms with strict compliance to DOT specification 4BW240 and equipped with a POL valve. Carbon steel construction with gray powder coat paint for maximum rust protection. Lightweight, refillable design. Cylinder is shipped empty, must be filled. For outdoor use only