If you're deciding between this page and our 4" MERV 13 collection, here's the practical difference: MERV 11 captures everyday household particles — dust, pollen, pet dander, and mold spores. MERV 13 goes further, capturing finer particles including bacteria and virus carriers. MERV 11 filters are priced lower and are the right choice for most homes without specific air quality concerns.
The 4" depth gives you significantly more filtration media than a standard 1" filter, meaning longer service life — typically 6 to 12 months between changes — and better dust-holding capacity without the frequent replacements a 1" filter requires.
We carry 4" MERV 11 filters in two formats:
Universal 6-packs in the most common residential sizes — an economical way to stay stocked for a full year or more.
OEM cross-reference 2-packs sized at 19 x 20 x 4¼ inches, compatible with whole-home media systems from:
These Tier1 replacements match OEM dimensions and filtration performance at a lower price point than factory filters — with 2-packs priced between $49 and $66.
Not sure whether MERV 11 or MERV 13 is right for your system? Call 1-800-277-3458.