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20x20x4 MERV 13: pack prices & where to buy

Printed size 20x20x4, MERV 13 only. Check the depth of your old filter first: most generic 20x20x4 packs are 3-5/8 to 3-3/4 inches deep (actual ~19.5 × 19.5), the Filtrete MPR 1900 is 4.31 inches, and the Honeywell FC200E1011 cartridge for F100/F200 cabinets is 4-3/8 inches. Lowest per filter on 25 Oct: Simply 20x20x4 MERV 13 6-pack on Amazon at $11.66.

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Our pickAerostar 20x20x4 MERV 13MERV 13 · Pack of 6$115.99$19.33 per filterLowest verified price per filter (MERV 13): $19.33 each, checked 28 OctBuy at Amazon

Match & price

Honeywell F100/F200 media cabinet (20×20)? Its MERV 13 cartridge is the 4-3/8-inch FC200E1011 — see the FC200E1011 page (MERV 11 version: FC100A1011). All MERV levels: 20x20x4 size page.

Full answer

A 20x20x4 is a four-inch media filter for a dedicated cabinet. This page is only the MERV 13 slice of that size. On 24 Oct 2026 we read seven MERV 13 listings on Amazon, the Nordic Pure MERV 13 packs on nordicpure.com, and the Honeywell FC200E1011 packs on the Air Quality Honeywell Store. For a standard 4-inch rack (filters about 3-5/8 to 3-3/4 inches deep), the cheapest per filter was the Simply 6-pack at $69.98 ($11.66 each), then the Aerostar 6-pack ($115.99, $19.33 each), and the Aerostar 4-pack ($98.99, $24.75 each). The BNX TruFilter 2-pack card was removed on 26 Oct because its Amazon listing now shows a 12x20x1, not a 20x20x4. Nordic Pure’s own 6-pack was $159.99 ($26.67 each). The Filtrete MPR 1900 2-pack ($49.99, $25.00 each) is a little deeper at 4.31 inches. If your cabinet takes a 4-3/8-inch cartridge (Honeywell F100/F200 style), look at the Honeywell FC200E1011 ($360.00 for a 5-pack, $72.00 each, at the Honeywell Store). All MERV levels: the parent 20x20x4 size page.

Price check notes

Amazon (persistent checker profile, en-US, ZIP 10001, featured new buy-box, one-time purchase, 24 Oct 2026; each read at ~9:18–9:19pm and again at ~9:21pm ET, same price on both reads; the Filtrete 2-pack read at ~9:12 and ~9:19pm): Simply MERV 13 6-pack B0DJMYHPSV $69.98 (sold by Amazon.com); Aerostar MERV 13 6-pack B01D94CXT4 $115.99 (sold by Amazon.com); BNX TruFilter MERV 13 2-pack B0C2RFB55G: on 25 Oct and again on 26 Oct this listing showed a BNX TruFilter 12x20x1 2-pack at $39.99, not the 20x20x4, and an Amazon search on 26 Oct found no BNX 20x20x4 MERV 13 2-pack, so the card was removed (last seen as a 20x20x4 at $47.78 on 24 Oct); Aerostar MERV 13 4-pack B07F1WY1LV $98.99 (featured offer from Air Filters Delivered LLC); Filtrete MPR 1900 2-pack B0DCGRLXXW $49.99 (28 Oct; $54.13 before) (featured offer from Legend Sports NYC, only 1 left; $54.13 on 24 Oct); Filterbuy MERV 13 4-pack B00CJZ88PI $112.96 (sold by Filterbuy); Nordic Pure MERV 13 2-pack B005ESP0VM $58.99 (sold by Amazon.com). Listings were found in one Amazon search pass (~9:14pm ET); actual sizes come from each listing’s title or product details. Nordic Pure (nordicpure.com, one-time purchase, read 24 Oct 2026 ~9:01pm ET): MERV 13 6-pack $159.99 and 2-pack $58.99. Air Quality Honeywell Store FC200E1011 5-pack $360.00, 4-pack $290.00 and 2-pack $165.00, product pages read 24 Oct 2026 (~9:00pm ET, in stock).

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-inch filter has much more pleat area than a 1-inch panel, so MERV 13 usually adds less airflow resistance in a media cabinet than it does in a thin slot. Change it on schedule (4-inch media typically lasts several months).

Actual size by brand
  • Simply 20x20x4 MERV 13: 19.5 × 19.5 × 3.63 (Amazon B0DJMYHPSV, listing title).
  • Aerostar 20x20x4 MERV 13: 19.5 × 19.5 × 3.75 (Amazon B01D94CXT4 and B07F1WY1LV listings).
  • Filterbuy 20x20x4 MERV 13: 19.5 × 19.5 × 3.63 (Amazon B00CJZ88PI listing).
  • Nordic Pure 20x20x4 MERV 13: 19.5 × 19.5 × 3.63 (Amazon B005ESP0VM listing).
  • Filtrete 20x20x4 MPR 1900: 19.75 × 19.75 × 4.31 (3M product page, as on our 20x20x4 page).
  • Honeywell FC200E1011: 19.875 × 19.875 × 4.375 (as on our FC200E1011 page).

A 3-5/8-inch pack will leave a gap in a Honeywell 4-3/8-inch cabinet, and a 4-3/8-inch cartridge will not slide into a 3-5/8-inch rack. Measure the old filter first: how to measure.

Where to buy (all stores)
  • Amazon — six MERV 13 cards above, read 24 Oct 2026; or 20x20x4 MERV 13 search.
  • Nordic Pure (official, via Awin) — MERV 13 6-pack and 2-pack cards above, read 24 Oct 2026; the 1-pack is on the parent 20x20x4 page.
  • Air Quality Honeywell Store — FC200E1011 5-, 4- and 2-pack cards above, read 24 Oct 2026; more on the FC200E1011 page.
FAQ

Is 20x20x4 the same as 20x20x5? Not quite. “20x20x5” usually names a 4-3/8-inch-deep Honeywell-style cartridge (like the FC200E1011), which will not fit a standard 3-5/8-inch 20x20x4 rack. Match the depth of your current filter. It is also not a 20x20x1 or 20x20x2.

Which pack is cheapest per filter? On 24 Oct, the Simply 20x20x4 MERV 13 6-pack ($11.66 per filter).

Will a Honeywell FC200E1011 fit my 20x20x4 slot? Only if the slot takes a 4-3/8-inch-deep cartridge (Honeywell F100/F200 style). Most generic 20x20x4 racks take 3-5/8 to 3-3/4 inches.

Sources