Manufacturer Name: WHIRLPOOL Product Number: WPW10440740 OEM Part Number: WPW10440740 Product Description: Lmp-Basles The Whirlpool WPW10440740 Microwave Lamp Base is a vital replacement part for Whirlpool microwaves. It holds the light bulb in place and ensures proper illumination inside the microwave. https://www.hnkparts.com/wpw10440740-whirlpool-lmp-basles