11-POUND LOW PROFILE GAS CYLINDER - perfect solution to optimizing space when a standard vertical 20LB propane tank won't fit. NEVER RUN OUT OF PROPANE: Our built-in gas meter gauge provides accurate gas level readings 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 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