6 Pack of 10x20x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 9-1/2 x 19-1/2 x 7/8 - Walmart.com
Amazon.com: Airaid (AIR-720-128) Universal Clamp-On Air Filter: Oval Tapered; 4.5 Inch (114 mm) Flange ID; 7.375 Inch (187 mm) Height; 11.5 Inch x 7 Inch (292 mm x 178 mm) Base; 9