Thermwell Products SP57-5 Water Heater Blanket 1-1/2-Inch X 48-Inch X 75-Inch Water Heater Blanket Fits Up To 60-Gallon Tank Vinyl, Backed Fiberglass, Insulation Blanket Designed For Gas, Oil, And Electric Water Heaters Blanket Helps You Save Energy By Reducing Your Water Heater-Feet's Recovery Time