Aluminum frame and mesh filter made by Filter Everything and compatible with GENERAL ELECTRIC WB2X3998. Dimensions measure 9-7/8 x 11-11/16 x 5/17. Sold as a 4-Pack. Our filters are manuctured to meet or exceed OEM quality and are fully compatible with the name brand (OEM) model. Aluminum filters should be cleaned every 60-90 days; carbon filters should be replaced every 6-9 months. Proudly packed and shipped from our facility near Cleveland, OH.