Long lasting ABS construction: Crafted from sturdy ABS material, this general plastic battery box for gas water heaters maintains its shape and color for reliable long term use, providing a secure power housing option with a smooth burr exterior for safe handling Battery box replacement: Ideal for replacing your existing water heater battery box, this accessory helps prolong the lifespan of your appliance by ensuring continuous functionality and efficiency, saving you the cost of a full unit replacement while maintaining dependable operation Compatible 3V D battery design: Specifically engineered to hold 2 D batteries, this double chamber battery box delivers a stable 3V power supply compatible with various gas boiler and water heater models that require this common battery configuration for consistent ignition and performance Enhanced appliance reliability: Installing this water heater accessory provides a steady power source to help ensure reliable operation of your gas boiler or fireplace. Its general fit for multiple models makes it a convenient and cost effective upgrade for your home heating system Use scenarios Replacing a worn or damaged battery box on a gas water heater to restore ignition reliability and prevent interruptions without replacing the entire unit Standardizing power supply across multiple gas boilers or water heaters that require a 3V D cell configuration, reducing spare parts and maintenance Upgrading an older gas boiler or fireplace with a reliable two D cell battery box to improve overall reliability during regular use