19x20x4 MERV 8 air filter
These are the 19x20x4 filters in our catalog with a MERV 8 rating. Buy the same nominal size your slot was designed for. All 19x20x4 filters · How to choose a MERV rating · What size furnace filter do I need?
We list the nominal size 19x20x4 as printed on the frame. We do not have measured actual dimensions for these items, and we do not guess them. MERV is the rating already in our catalog for each item.
| Item | MERV | Nominal size | Pack | Price | Availability |
|---|---|---|---|---|---|
| Tier1 19x20x4-1/4 Merv 8 Pleated AC Furnace Air Filter 2 Pack (Actual Size: 19 1/8 x19 13/16 x 4 1/2) | 8 | 19x20x4 | 2 | $71.11 | In stock |
FAQ
What does 19x20x4 MERV 8 mean?
19x20x4 is the nominal filter size printed on the frame (width x height x depth, in inches). MERV 8 is the Minimum Efficiency Reporting Value in our catalog for these items. Choose a MERV rating your furnace or air handler can handle; see our MERV guide.
Do you list MPR or FPR ratings?
We list MERV when it is in our catalog. Some Filtrete product names also include a 600, 1500 or 1900 number; that number is part of the manufacturer's own name on the listing, not a rating we converted.
How often should I change this filter?
Follow the filter and equipment maker's interval. Check a 1-inch filter monthly and replace it sooner if it looks loaded with dust.