Fits checked Oct 1, 2026 · How we check

Fits these models

Part numbers

Genuine part
UK213
Replaces
213
Packs
UK213 02 (2-pack), UK213 04 (4-pack)
How often
Lasts up to 12 months
What is in it
MERV 13 TriPure 3-inch filter; one-time upgrade rails
Size
20 x 25 x 4 in nominal (21.44 x 27 x 3.68 actual)

Sources

  • Which filter fits 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
  • How many 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
  • How often shop.aprilaire.com Maker's own page checked Oct 1, 2026
    LONG FILTER LIFE – One filter lasts up to 12 months
  • Size 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 shop.aprilaire.com Maker's own page checked Oct 1, 2026
    MERV Rating: 13; Materials: Plastic, Synthetic Fiber
  • Packs shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Package sizes: 1-pack UK213; 2-pack UK213 02; 4-pack UK213 04
Show all 16 sources

Which filter fits

  1. 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
  2. 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
  3. 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'
  4. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    If the AprilAire or Space-Gard 6" cabinet has not yet been upgraded to a 4" filter, choose Model U1213/U1413 (includes both upgrade rails needed to convert the cabinet). If the cabinet has already been upgraded using the 1213/1413 Upgrade Kit, choose Model UK211. This replacement option is designed for cabinets that have already been converted to the 4" filter.

How many

  1. 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
  2. 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
  3. 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
  4. 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
  5. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    INCLUDED IN THE BOX: (1) U121 Air Purifier (1) 3F211 Air Filter; Filter Nominal Dimensions (H x W): 20 x 25 (inches)
  6. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    INCLUDED IN THE BOX: (1) U162 Air Purifier (1) 3F411 Air Filter; Filter Nominal Dimensions (H x W): 20 x 25 (inches)
  7. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    INCLUDED IN THE BOX: (1) U172 Air Purifier (1) 3F211 Air Filter; Filter Nominal Dimensions (H x W): 20 x 25 (inches)
  8. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    INCLUDED IN THE BOX: (1) U223 Air Purifier (1) 3F213 Air Filter; Filter Nominal Dimensions (H x W): 20 x 25 (inches)

How often

  1. 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: 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: Plastic, Synthetic Fiber

Packs

  1. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Package sizes: 1-pack UK213; 2-pack UK213 02; 4-pack UK213 04