Aluminum replacement air cleaner for Honeywell Air Cleaner Models F300E1001. Dimensions measure 9-7/8 x 15-7/8 x 3/8. 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.