16x24x4 MERV 10 ( FPR 6-7 ) AC and Furnace Pleated 4" Inch Air Filters. Case of 6. Exact Size: 15-1/2 x 23-1/2 x 3-3/4"

20x24x4 MERV 10 ( FPR 6-7 ) AC and Furnace Pleated 4" Inch Air Filters. Case of 6. Exact Size: 19-3/8 x 23-3/8 x 3-3/4"

Glasfloss ZL 18x24x4 MERV 10 ( FPR 6-7 ) AC and Furnace Pleated 4" Inch Air Filters. Case of 6. Exact Size: 17-1/2 x 23-1/2 x 3-3/4"