PadMatch / Every humidifier water panel and furnace filter size
- MERV rating
- MERV 11
- Filtrete MPR equivalent
- Filtrete MPR 1000 to 1200 (Micro Allergen tier); MPR 1500 and 1550 test closest to MERV 12
- Home Depot FPR equivalent
- Home Depot FPR 7
- Captures
- everything MERV 8 does plus finer dust, pet dander, smog and auto emission particles down to about 1 micron
- Cross-references to
- Filtrete MPR 1000 to 1200 (Micro Allergen tier); MPR 1500 and 1550 test closest to MERV 12; Home Depot FPR 7
The Filtrete MPR and Home Depot FPR numbers that equal MERV 11.
| Part number | Type | Fit group | Frame size to match |
|---|---|---|---|
| MERV 11 MPR and FPR equivalent | OEM | ||
| Filtrete MPR 1000 to 1200 (Micro Allergen tier); MPR 1500 and 1550 test closest to MERV 12; Home Depot FPR 7 | Cross-ref |
MERV is the ASHRAE 52.2 standard. Filtrete (3M) prints its own MPR number and Home Depot prints an FPR number, and the two only approximate MERV. MERV 11 corresponds to Filtrete MPR 1000 to 1200 (Micro Allergen tier); MPR 1500 and 1550 test closest to MERV 12 and to Home Depot FPR 7.
Match on MERV when you cross brands. The same physical filter can carry a different MPR sticker at different retailers, so the MPR alone is not a reliable identity.
Find your model
Read the number stamped on the humidifier cabinet or printed on the old pad, then match it below. Confirm the frame size before buying a generic.
- MERV 11 furnace filterwhat it captures
- MERV 8 MPR and FPR equivalentHome Depot FPR 5
- MERV 13 MPR and FPR equivalentHome Depot FPR 10
Sources: Filterbuy MERV vs MPR vs FPR ratings guide · 3M Filtrete MERV vs MPR comparison (3M multimedia) · LearnMetrics FPR vs MERV chart