Replacement aluminum filters made by Filter Everything and compatible with Broan G-8187. Dimensions measure 11-1/4 X 11-5/8 X 11/32. 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.