Frigidaire, a company known for producing a range of household products, also supplies items for the Electrolux and Sears-Kenmore brands. The item in discussion is a glass cover designed to fit over the bulb beneath the microwave. Its dimensions are approximately 6.25 inches by 2.25 inches and it features a single piece of tempered glass. Generally, a microwave requires two of these lenses, with one positioned on each side. Orders should be placed based on specific requirements. For lenses that measure about 3.5 inches by 2.25 inches, please reference and request part number 5304430287.