Mfr # 60089. The Eastman® 26-inch Inner Diameter (28-inch Outer Diameter) water heater drain pan prevents permanent damage to nearby fixtures and floors caused in the event of a water heater leak or runoff. A drain pan is a great investment that when properly installed will catch any leaks saving you a lot of money in costly repairs. The pan is built with aluminum for extra strength and durability. It is designed for use with gas water heaters. The drain pan includes a 1-inch PVC drain fitting for easy connection to a drain pipe through a pre-cut side opening.