18x24x1 MERV 13: pack prices & where to buy

Printed size is 18x24x1 (same panel as 24x18x1). This page is only the MERV 13 slice — Filtrete packs that print MERV 13 (MPR 1900 class on Target) and Nordic Pure MERV 13. There is no Honeywell Store 18x24x1 Ultra Efficiency MERV 13 SKU in the catalog we checked (product URLs 404; nearby listed sizes include 18x20x1 and 20x24x1) — omitted rather than invented. Nominal 18×24×1 is larger than the cut panel: parent page actuals include Filtrete closer to 17.81 × 23.81 × 0.81 (some listings 17.68 × 23.68) and Nordic Pure about 17.5 × 23.5 × 0.75. This is not 16x24x1, 18x20x1, or 20x24x1. Measure and compare brands on the parent 18x24x1 size page.

Nordic Pure MERV 13 12-pack $134.99 ($11.25/filter) re-checked 4 Oct 2026 on nordicpure.com (MERV 13 / 12 variant confirmed, one-time purchase price; Awin wrap unchanged). Target Filtrete MPR 1900 1-pack (A-15841460, 18x24x1 MERV 13 / MPR 1900) read live 4 Oct 2026 at $20.69 — a Target sale price (reg $22.99, $2.30 off, sale ends Monday); shipping availability may vary by ZIP (prefer Target over Walmart). Honeywell Store 18x24x1 Ultra MERV 13 4-pack and 12-pack URLs returned 404 — no Honeywell Buy row invented. Amazon US search hit AI-agent interstitial tonight — no Amazon Filtrete buy-box row invented for this size. No Filterbuy chart scrapes.

What MERV 13 means here

MERV is ASHRAE 52.2, as summarized by EPA. MERV 13 is the band EPA cites as ≥50% capture of 0.30–1.0 µm, ≥85% of 1.0–3.0 µm, and ≥90% of 3.0–10.0 µm. A 1-inch MERV 13 is not HEPA. We do not claim health outcomes. Higher MERV adds resistance: a 1-inch MERV 13 typically drops more pressure than MERV 8 or 11 in the same slot. EPA’s upgrade language is to pick at least MERV 13, or as high a rating as your system fan and filter slot can accommodate, and to ask an HVAC technician if you are unsure. Full 8 vs 11 vs 13 table: MERV guide. Filtrete also prints an MPR number — MPR 1900 family pages print MERV 13; MPR is 3M’s scale, not MERV (see MPR vs MERV).

MERV 13 18x24x1 options

Actual sizes are copied from manufacturer or merchant product copy already on the 18x24x1 page. Prices are public shelf/cart snapshots — Nordic Pure MERV 13 12-pack matched 3 Oct 2026; Target Filtrete dollars not printed until a cart price is read. Per-filter math is pack price ÷ count, rounded to the cent. They are not live carts after you leave this page. Shipping, subscribe-and-save, and store-only deals will move them.

Target’s Filtrete 18x24x1 MPR 1000 packs on the parent page (A-15113308 / A-51925606) are MERV 11 class — useful nearby stock, but not listed as MERV 13 here. Honeywell has no 1-inch 18x24x1 Ultra SKU in the catalog we checked. Full 18x24x1 pack table including MERV 8: 18x24x1.

Filtrete MPR is not MERV — see MPR vs MERV.

When not to buy MERV 13 in 1-inch

• The furnace or air-handler manual calls for a lower MERV (or a named brand/grade below 13). Follow the equipment, not a search query.
• An HVAC technician says the fan cannot take the extra pressure drop of a 1-inch MERV 13.
• The slot is a 4-inch (or 5-inch) media cabinet. A 1-inch MERV 13 is not a 4-inch media cartridge.
• You need 16x24x1, 18x20x1, or 20x24x1 — different printed sizes (common mix-ups with 18x24x1).
• Pets / allergies pressure is real, but choking the fan is worse — start from pets / allergies and how often.

If you are unsure, ask an HVAC technician. EPA’s wording is at least MERV 13 or as high as the fan and slot can accommodate — not “always MERV 13 in every 1-inch rack.”

Where to buy

• Nordic Pure MERV 13 18x24x1 Factory page via Awin: Nordic Pure 18x24x1 MERV 13 12-pack $134.99 ($11.25/filter; re-checked 4 Oct 2026).
• Filtrete MERV 13 18x24x1 (Target) MPR 1900 prints MERV 13. Target 1-pack A-15841460 ($20.69 Target sale price, reg $22.99; price checked 4 Oct 2026). Prefer Target over Walmart for Filtrete on this site.
• Honeywell Store No 1-inch 18x24x1 Ultra Efficiency MERV 13 SKU in the catalog we checked on 3 Oct 2026 (4-pack / 12-pack product URLs returned 404; nearby listed sizes include 18x20x1 and 20x24x1): honeywellconsumerstore.com.
• Amazon / Target search Amazon: 18x24x1 MERV 13 · Target: 18x24x1 MERV 13.

Need MERV 8 or 11, or the full brand actual-size table? Go back to 18x24x1. Sister MERV 13 hubs: 14x25x1 MERV 13 · 16x20x1 MERV 13 · 16x24x1 MERV 13 · 16x25x1 MERV 13 · 20x20x1 MERV 13 · 20x25x1 MERV 13 · 20x30x1 MERV 13 18x24x1 MERV 13 · 20x24x1 MERV 13. Guides: measure · how often · MERV · pets / allergies · MPR vs MERV.

No ranking. Stock and price change. A 1-inch MERV 13 is not a 4-inch media cabinet and is not HEPA.