Powerblanket Insulated 30-Gallon PRO Model Drum & Barrel Heater - Max Temp 63C/145F, 120V | Lowe's Canada
VEVOR Drum Heater, 30 Gal Drum Heater Blanket 145° F Adjustable Oil Pail Heater Band 72inch Barrel Heater with Temperature Controller, Oxford Cloth, Top Cover, for Oil Drum, 750W, 120V: Amazon.com: Industrial