Product details:

The 19BGH2 is a gas cylinder heater for 20 lb. tanks that protects against the effects of cold weather while maintaining proper pressure and efficiency on any gas cylinder. For use with 12.5" Dia. x 18" H tanks, the 120 watt cylinder heater saves money by optimizing material usage and eliminating unnecessary cylinder refills in cold weather. Powerblanket features a full-wrap design and includes UL/CSA/CE safety certifications.