Fits checked Oct 1, 2026 · How we check
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AprilAire · media air cleaner filter

AprilAire UK911 MERV 11 + rails

AprilAire UK911 (Replaces 910) MERV 11 TriPure Filter + Upgrade Rails. Part UK911. Lasts up to 12 months. Fits 2 models.

Buy UK911 MERV 11 + rails on AmazonManufacturer page

Opens an Amazon search for AprilAire UK911 MERV 11 + rails. Check the listing says UK911.

Fits these models

Part numbers

Genuine part
UK911
Replaces
910
Packs
UK911 02 (2-pack), UK911 04 (4-pack)
How often
Lasts up to 12 months
What is in it
MERV 11 TriPure 3-inch filter; one-time upgrade rails
Size
25 x 20 x 4 in nominal (23.93 x 21.75 x 3.68 actual)

Sources

  • Which filter fits shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Compatible Models: 1910, U191
  • How many shop.aprilaire.com Maker's own page checked Oct 1, 2026
    INCLUDED IN THE BOX: (1) U191 Air Purifier (1) 3F911 Air Filter; Filter Nominal Dimensions (H x W): 25 x 20 (inches)
  • 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: 25H x 20W x 4D (inches) Actual Measurements: 23.93H x 21.75W x 3.68D (inches)
  • What's in it shop.aprilaire.com Maker's own page checked Oct 1, 2026
    MERV Rating: 11; Materials: Plastic, Synthetic Fiber
  • Packs shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Package sizes: 1-pack UK911; 2-pack UK911 02; 4-pack UK911 04
Show all 8 sources

Which filter fits

  1. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Compatible Models: 1910, U191
  2. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    Product 'AprilAire UK911 (Replaces 910) MERV 11 TriPure Filter + Upgrade Rails', SKUs UK911, UK911 02, UK911 04
  3. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    The AprilAire UK911 replaces the sunsetting AprilAire 910 Filter; 'Your next subscription will be the 3F911 - filter only'

How many

  1. shop.aprilaire.com Maker's own page checked Oct 1, 2026
    INCLUDED IN THE BOX: (1) U191 Air Purifier (1) 3F911 Air Filter; Filter Nominal Dimensions (H x W): 25 x 20 (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: 25H x 20W x 4D (inches) Actual Measurements: 23.93H x 21.75W x 3.68D (inches)

What's in it

  1. 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 UK911; 2-pack UK911 02; 4-pack UK911 04