6 Pack of 18x18x1 MERV 10 Pleated Air Filters by Glasfloss. Actual Size: 17-1/2 x 17-1/2 x 7/8 ● Filtration Rating: MERV 10. Comparable to 3M/Filtrete MPR rating 600 to 800, or Honeywell FPR rating 5 to 6. ● Protects from Lint, Dust, Pet Dander, Pollen, Dust Mites, Smog, & Mold ● Air Flow is comparable to a MERV 8 with improved filtration
