Aluminum replacement air cleaner filter made by Filter Everything and compatible with Honeywell Models F50E1299. Dimensions measure 12-3/8 x 19-7/8 x 3/8 inches. Sold as a 2-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.