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16x25x5 MERV 13: pack prices & where to buy

Printed size 16x25x5, MERV 13 only. Lowest per filter on 30 Oct: Filtrete SlimFit MPR 1900 Lennox-fit 2-pack at $22.00 each. Check your old cartridge depth first: Honeywell/Lennox cabinets take a ~4⅜-inch cartridge (about 15.75 × 24.75 × 4.38; Filtrete’s Lennox-fit is 4.31), Air Bear-style cabinets a deeper ~4.88-inch one.

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Our pickFiltrete 16x25x5 SlimFit MPR 1900 (Lennox fit)MERV 13 · Pack of 2$43.99$22.00 per filterLowest verified price per filter (MERV 13): $22.00 each, checked 30 OctBuy at Amazon

Match & price

All MERV levels (MERV 8, 11, 12 and 13) and the full fit table: 16x25x5 size page. Honeywell box says 16x25x4? See 16x25x4 MERV 13 and Honeywell FC100A1029. Thinner slot? See 16x25x2 MERV 13 or 16x25x1 MERV 13.

Full answer

“16x25x5” is a media-cabinet cartridge, not a 1-inch slot filter. Most are Honeywell/Lennox replacements about 4⅜ inches deep (Nordic Pure prints 15¾ × 24¾ × 4⅜; Filtrete’s Lennox-fit MPR 1900 lists 15.63 × 24.74 × 4.31). Air Bear-style cabinets take a deeper cartridge (about 4.88 inches). On 30 Oct 2026 the cheapest MERV 13 per filter was the Filtrete SlimFit MPR 1900 Lennox-fit 2-pack at $22.00 each. Next: Filtrete MPR 1900 Air Bear-fit 2-pack $53.99 ($27.00 each); Filterbuy Honeywell/Lennox-fit 4-pack $112.96 ($28.24 each); Filterbuy Honeywell/Lennox-fit 3-pack $89.97 ($29.99 each); Filterbuy Honeywell/Lennox-fit 2-pack $67.98 ($33.99 each). The Nordic Pure MERV 13 packs on nordicpure.com were 1-pack $41.99, 2-pack $80.99 ($40.50 each) and 4-pack $149.99 ($37.50 each). Match the depth of the cartridge you pull out.

Which cabinet do I have?
  • Honeywell F100 / F200 / F50 or Lennox Healthy Climate media cabinet: the old cartridge is about 4⅜ inches deep (Honeywell FC100A1029, Lennox X6670 class). Buy a “Honeywell/Lennox” or “Fits Lennox” 16x25x5.
  • Trion Air Bear-style cabinet: the old cartridge is about 4.88 inches deep. Buy an “Air Bear” 16x25x5 and check the listed depth.
  • AprilAire 2200 / Space-Gard: different cartridges — see AprilAire 210 vs 213.

Measure the old cartridge depth before you order: how to measure.

Price check notes

Nordic Pure (nordicpure.com product 16x25x5-air-filter, Honeywell/Lennox 4 3/8 replacement, one-time purchase, read 30 Oct 2026 ~9:04pm ET): MERV 13 1-pack $41.99, 2-pack $80.99 and 4-pack $149.99 (the only MERV 13 pack sizes offered). Amazon (persistent checker profile, en-US, ZIP 10001, featured new buy-box, one-time purchase, each listing read twice on 30 Oct 2026, ~9:05–9:06pm and ~9:27pm ET, same price both reads, except the Filtrete Lennox-fit B0F9LS43QT, read once ~9:26pm at the same $43.99 as our 29 Oct read): Filtrete SlimFit MPR 1900 Lennox-fit 2-pack B0F9LS43QT $43.99; Filtrete MPR 1900 Air Bear-fit 2-pack B0DCGPQ88M $53.99; Filterbuy Honeywell/Lennox-fit 4-pack B07RY4NJXC $112.96; Filterbuy Honeywell/Lennox-fit 3-pack B0CRWPG11T $89.97; Filterbuy Honeywell/Lennox-fit 2-pack B00NVICAOW $67.98; Aerostar Honeywell-fit 2-pack B01CR9JGEC $69.97; Filterbuy Air Bear-fit 2-pack B00NSXK0TW $95.98; Filterbuy Honeywell/Lennox-fit 1-pack B09RXTX8C7 $54.99. Coupons and Subscribe & Save prices are not counted.

Why MERV 13?

MERV 13 catches more fine particles (smoke, some bacteria, fine dust) than MERV 8 or 11, per the EPA MERV table. A 4–5-inch media cartridge has far more pleat area than a 1-inch panel, so MERV 13 adds little airflow resistance in these cabinets, and the cartridge usually lasts 6–12 months. Check it when the season changes and replace it when it looks gray.

Actual size by brand
  • Filterbuy Honeywell/Lennox-fit: 15.75 × 24.75 × 4.38 (Honeywell/Lennox cabinets) (Amazon B09RXTX8C7 listing).
  • Filterbuy Honeywell/Lennox-fit: 15.75 × 24.75 × 4.38 (Honeywell/Lennox cabinets) (Amazon B00NVICAOW listing).
  • Filterbuy Honeywell/Lennox-fit: 15.75 × 24.75 × 4.38 (Honeywell/Lennox cabinets) (Amazon B0CRWPG11T listing).
  • Filterbuy Honeywell/Lennox-fit: 15.75 × 24.75 × 4.38 (Honeywell/Lennox cabinets) (Amazon B07RY4NJXC listing).
  • Filterbuy Air Bear-fit: 15.63 × 24.13 × 4.88 (Trion Air Bear cabinets) (Amazon B00NSXK0TW listing).
  • Aerostar Honeywell-fit: 15 7/8 × 24 3/4 × 4 3/8 (Honeywell cabinets) (Amazon B01CR9JGEC listing).
  • Filtrete MPR 1900 Air Bear-fit: 15.75 × 24.13 × 4.88 (Trion Air Bear cabinets) (Amazon B0DCGPQ88M listing).
  • Filtrete SlimFit MPR 1900 Lennox-fit: 15.63 × 24.74 × 4.31 (Lennox cabinets) (Amazon B0F9LS43QT listing).
  • Nordic Pure 16x25x5 Honeywell/Lennox MERV 13: 15 3/4 × 24 3/4 × 4 3/8 (Nordic Pure Honeywell replacements page; see the 16x25x5 size page).
Where to buy (all stores)
  • Nordic Pure (official, via Awin) — MERV 13 1-, 2- and 4-pack cards above, read 30 Oct 2026.
  • Amazon — the Filterbuy, Filtrete and Aerostar cards above, read twice on 30 Oct 2026; or 16x25x5 MERV 13 search.
FAQ

Is 16x25x5 the same as 16x25x4? Often. Honeywell prints its 4⅜-inch cartridges as 16x25x4 (or 16x25x4.5), and most stores sell that cartridge as 16x25x5. Match the depth of your old cartridge.

Which pack is cheapest per filter? On 30 Oct, the Filtrete SlimFit MPR 1900 Lennox-fit 2-pack ($22.00 per filter).

Will an Air Bear filter fit my Honeywell or Lennox cabinet? Usually not. The Air Bear cartridge is deeper (about 4.88 inches) and narrower; the Honeywell/Lennox one is about 4⅜ deep. Buy the one that matches your cabinet.

How often do I change a 5-inch MERV 13? Many 4–5-inch media cartridges are rated for about 6–12 months; sooner with pets, smoke or renovation dust. See how often to change.

Sources