NEVER RUN OUT OF PROPANE: Our built-in gas meter gauge provides accurate gas level readings so you don’t have to worry about running out of propane! EMPTY TANK: Pre-purged vacuum ready for filling with propane; built from high-grade, welded steel and powder coated for rust prevention OVERFILL PREVENTION DEVICE: Comes with an OPD valve to prevent overfilling; required by law in most States, if your tank doesn't have this, most places won't fill it! SAFETY: X-ray and hydrostatic tested and DOT and Transport Canada certified so you can be sure to transport safely both in the US and CA APPLICATION: Widely used for storing and transporting propane gas; commonly utilized for grilling, camping, heating, and other outdoor activities