6 Pack of 16x20x4 MERV 10 Pleated 4" Inch Air Filters by Glasfloss. Actual Size: 15-1/2 x 19-1/2 x 3-3/4

6 Pack of 16x20x4 MERV 10 Pleated 4" Inch Air Filters by Glasfloss. Actual Size: 15-1/2 x 19-1/2 x 3-3/4 Filtration Rating: MERV 10. Comparable to 3M/Filtrate MPR rating 600 to 800, or FPR rating 5 to 6. Protects from Lint, Dust, Pet Dander, Pollen, Dust Mites, Smog, & Mold Note: Does not replace 5" inch or 4-3/8" Depth filters. Please check actual filter size needed.