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AprilAire · media air cleaner · media air cleaner cabinet

AprilAire 3210 replacement filter

Use part 213, or any one of 210, 213CBN, 216, UK213 or UK211. Replace every 12 months.

Any one of these fits · first listed

Maker lists this model

AprilAire 213 MERV 13

Part number
213
How many
1 per unitpacks: 213 02 (2), 213 04 (4), 213 08 (8)
How often
Replace every 12 months
Size
20 x 25 x 4 in20 x 25 x 4 in nominal (20.6 x 26.63 x 4 actual)

AprilAire is sunsetting the 213; the UK213 is its replacement. AprilAire's pages do not say how many filters the cabinet holds; we list one. See the UK213.

Buy 213 MERV 13 on AmazonManufacturer page

Opens an Amazon search for AprilAire 213 MERV 13. Check the listing says 213.

See the sources

Compare the 6 options

The 3210 holds one filter at a time. Any one of these fits; AprilAire lists them in this order.

FilterGradeSizeHow oftenBuy
213 MERV 13213being replaced by UK213MERV 13 synthetic media20 x 25 x 4 inEvery 12 monthsAmazon
210 MERV 11210being replaced by UK211MERV 11 synthetic media20 x 25 x 4 inEvery 12 monthsAmazon
213CBN MERV 13 + carbon213CBNMERV 13 synthetic media, activated carbon20 x 25 x 4 inEvery 6 monthsAmazon
216 MERV 16216MERV 16 synthetic media20 x 25 x 4 inEvery 6 monthsAmazon
UK213 MERV 13 + railsUK213MERV 13 TriPure 3-inch filter, one-time upgrade rails20 x 25 x 4 inLasts up to 12 monthsAmazon
UK211 MERV 11 + railsUK211MERV 11 TriPure 3-inch filter, one-time upgrade rails20 x 25 x 4 inLasts up to 12 monthsAmazon

Look-alike models that take a different filter

The 2310, 3310 and 4300 take the 20 x 20 310 and 313; the 2410, 3410 and 4400 take the 16 x 25 410 and 413; the older 2200 and 2120 need AprilAire's 1213 kit before the 213 fits.

Sources

High confidence: the manufacturer names this exact model on a live page. Each line is the page we read and the day we read it.

  • Which filter fits shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Compatible Models: 1210, 1620, 2210, 2216, 3210, 4200, 2120 with Upgrade Kit 1213, 2200 with Upgrade Kit 1213, UV12, UV22. With 1213 Upgrade Kit, also fits 2120, 2200 AprilAire and 2200 Space-Gard Air Purifiers
  • How often shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Recommended Replacement Schedule: 12 Months
  • Size shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Nominal Measurements: 20H x 25W x 4D (inches) Actual Measurements: 20.6H x 26.63W x 4D (inches)
  • What's in it shop.aprilaire.com Maker's own page checked Oct 1, 2026
    MERV Rating: 13; Materials: Synthetic Fiber
  • Packs shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Package sizes: 1-pack 213; 2-pack 213 02; 4-pack 213 04; 8-pack 213 08
  • Other genuine options shop.aprilaire.com Maker's own page checked Oct 1, 2026
    2210 ships with 213; compatible 210 (MERV 11), 213CBN (MERV 13 + carbon), 216 (MERV 16); 'up to every 12 months'; '20 x 25' nominal
Show all 49 sources

Which filter fits

  1. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Compatible Models: 1210, 1620, 2210, 2216, 3210, 4200, 2120 with Upgrade Kit 1213, 2200 with Upgrade Kit 1213, UV12, UV22. With 1213 Upgrade Kit, also fits 2120, 2200 AprilAire and 2200 Space-Gard Air Purifiers
  2. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Compatible Models: 1210, 1620, 2210, 2216, 3210, 4200, 2120 with Upgrade Kit 1213, 2200 with Upgrade Kit 1213, UV12, UV22. With 1213 Upgrade Kit, also fits 2120, 2200 AprilAire and 2200 Space-Gard Air Purifiers
  3. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Compatible Models: 1210, 1620, 2210, 2216, 3210, 4200, 2120 with Upgrade Kit 1213, 2200 with Upgrade Kit 1213, UV12, UV22. With 1213 Upgrade Kit, also fits 2120, 2200 Air Purifiers and 2200 Space-Gard
  4. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Compatible Models: 1210, 1620, 2210, 2216, 3210, 4200, 2120 with Upgrade Kit 1213, 2200 with Upgrade Kit 1213, UV12, UV22. With 1213 Upgrade Kit, also fits 2120, 2200 Air Purifiers and 2200 Space-Gard
  5. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Compatible Models: 1210, 1620, 2120, 2200, 2210, 2216, 3210, 4200, U121, U223, U226, U162, U172
  6. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Compatible Models: 1210, 1620, 2120, 2200, 2210, 2216, 3210, 4200, U121, U223, U226, U162, U172
  7. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Product 'AprilAire 213 MERV 13 Air Filter', SKUs 213, 213 02, 213 04, 213 08
  8. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Page for the 1210 (per its URL): Also compatible with: 213 MERV 13 Air Filter 213CBN MERV 13 + Carbon Air Filter 216 MERV 16 Air Filter
  9. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Page for the 1620 (per its URL): Also compatible with: 213 MERV 13 Air Filter 213CBN MERV 13 + Carbon Air Filter 216 MERV 16 Air Filter
  10. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Page for the 2210 (per its URL): Comes with one AprilAire 213 MERV 13 Air Filter
  11. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Page for the 2216 (per its URL): Also compatible with: 210 MERV 11 Air Filter 213 MERV 13 Air Filter 213CBN MERV 13 Air Filter
  12. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Page for the 1210 (per its URL): Comes with one AprilAire 210 MERV 11 Air Filter
  13. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Product 'AprilAire 210 MERV 11 Air Filter', SKUs 210, 210 02, 210 04, 210 08
  14. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Page for the 1620 (per its URL): Comes with one AprilAire 210 MERV 11 Air Filter
  15. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Page for the 2210 (per its URL): Also compatible with: 210 MERV 11 Air Filter 213CBN MERV 13 + Carbon Air Filter 216 MERV 16 Air Filter
  16. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Product 'AprilAire 213CBN MERV 13+ Carbon Air Filter', SKUs 213CBN, 213C02
  17. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Product 'AprilAire 216 MERV 16 Air Filter', SKUs 216, 216 02
  18. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Page for the 2216 (per its URL): Comes with one AprilAire 216 MERV 16 Air Filter
  19. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Product 'AprilAire UK213 (Replaces 213) MERV 13 TriPure Filter + Upgrade Rails', SKUs UK213, UK213 02, UK213 04
  20. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    The AprilAire UK213 replaces the sunsetting AprilAire 213 Filter; 'Your next subscription will be the 3F213 - filter only'
  21. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Product 'AprilAire UK211 (Replaces 210) MERV 11 TriPure Filter + Upgrade Rails', SKUs UK211, UK211 02, UK211 04
  22. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    The AprilAire UK211 replaces the sunsetting AprilAire 210 Filter; 'Your next subscription will be the 3F211 - filter only'
  23. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    NEW AND IMPROVED U162 20 x 25 EASY INSTALL WHOLE-HOUSE AIR PURIFIER (LEFT RETURN DROP) with revolutionary new AprilAire 3F211 MERV 11 3" Air Filter

How often

  1. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Recommended Replacement Schedule: 12 Months
  2. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Recommended Replacement Schedule: 12 Months
  3. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Recommended Replacement Schedule: 6 Months
  4. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Recommended Replacement Schedule: 6 Months
  5. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    LONG FILTER LIFE – One filter lasts up to 12 months
  6. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    LONG FILTER LIFE – One filter lasts up to 12 months

Size

  1. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Nominal Measurements: 20H x 25W x 4D (inches) Actual Measurements: 20.6H x 26.63W x 4D (inches)
  2. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Nominal Measurements: 20H x 25W x 4D (inches) Actual Measurements: 20.6H x 26.63W x 4D (inches)
  3. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Nominal Measurements: 20H x 25W x 4D (inches) Actual Measurements: 20.6H x 25.66W x 4D (inches)
  4. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Nominal Measurements: 20H x 25W x 4D (inches) Actual Measurements: 20.6H x 26.63W x 4D (inches)
  5. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Nominal Measurements: 20H x 25W x 4D (inches) Actual Measurements: 21.44H x 27W x 3.68D (inches)
  6. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Nominal Measurements: 20H x 25W x 4D (inches) Actual Measurements: 21.44H x 27W x 3.68D (inches)

What's in it

  1. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    MERV Rating: 13; Materials: Synthetic Fiber
  2. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    MERV Rating: 11; Materials: Synthetic Fiber
  3. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    MERV Rating: 13; Materials: Synthetic Fiber
  4. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    MERV Rating: 16; Materials: Synthetic Fiber
  5. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    MERV Rating: 13; Materials: Plastic, Synthetic Fiber
  6. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    MERV Rating: 11; Materials: Plastic, Synthetic Fiber

Packs

  1. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Package sizes: 1-pack 213; 2-pack 213 02; 4-pack 213 04; 8-pack 213 08
  2. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Package sizes: 1-pack 210; 2-pack 210 02; 4-pack 210 04; 8-pack 210 08
  3. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Package sizes: 1-pack 213CBN; 2-pack 213C02
  4. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Package sizes: 1-pack 216; 2-pack 216 02
  5. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Package sizes: 1-pack UK213; 2-pack UK213 02; 4-pack UK213 04
  6. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Package sizes: 1-pack UK211; 2-pack UK211 02; 4-pack UK211 04

Other genuine options

  1. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    2210 ships with 213; compatible 210 (MERV 11), 213CBN (MERV 13 + carbon), 216 (MERV 16); 'up to every 12 months'; '20 x 25' nominal
  2. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    'AprilAire UK213 (Replaces 213) MERV 13 TriPure Filter + Upgrade Rails'; 'replaces the sunsetting AprilAire 213 Filter'; $125.99; rails are one-time