20” x 25” x 1” Filters
Filtrete 20x25x1 Air Filter, MERV 11, MPR 1000, 2 Pack, Allergens & Pet Dander
This is a great option for those who want extra filtration, have pets, or struggle with seasonal allergies. The MERV 11 rating indicates heavy-duty filtration capabilities.
Filtrete 20x25x1 Air Filter MERV 5, 6-Pack AC Furnace HVAC Filters for Home
Great price for a 6-pack with limited filtration capabilities. This is the option for you if you want the lowest level of protection that still provides use.