Washable / Reusable 1 Inch and 2 Inch Air Filters Merv 5 (estimated) These durable, washable filters come both standard and custom sizes in several different frame thicknesses - 1", 2" ½", and ¼". Washable 1 Inch Standard Size Air Filter MERV 5 Washable 1 Inch Custom Air Filters MERV 5 Washable 2 Inch Standard Size Filter MERV 5 Washable 2 Inch Custom Air Filters MERV 5 Aluminum Vent Hood and Air Filter Look At Our Other Air Filter Choices	See Our 'Tribute to the Troops' Flash Video