Duck Brand Water Heater Insulation Blanket fits most gas, oil and electric units up to 60-Gallon tanks. The recycled cotton insulation contains no fiberglass and won"t itch when applying product. It can helps save energy by preventing heat loss from your hot water tank. The Duck Brand Water Heater insulation blanket has an R- Value of 6.7 and is flame retardant with a class A fire rating. The 48-Inch x 75-Inch x 1.8-Inch blanket comes with tape for easy installation.