Representative image — tap to enlarge3M Filtrete 1000 Micro Allergen & Dust Defense Filter - 18x30x1 (4-Pack)
$103.57
Includes contiguous-US shipping and sales tax (no tax line at checkout).
Typical delivery is a few business days in the contiguous United States. A delivery estimate is confirmed in your payment-link email. Shipping to Alaska, Hawaii, Puerto Rico, other US territories and APO/FPO addresses is not included in any price; we quote it in your payment-link email before you pay.
| SKU | MM-AF-BD1EF2 |
|---|---|
| Brand | Filtrete |
| Item no. | FILTRETE-MICRO-18X30X1-4PK |
| Nominal size | 18x30x1 in. |
| MERV | 11 |
| Pack | 4 |
| Price checked | 2026-11-15 |
| Returns | 30 days from delivery (new, unused) |
Sold by MadMax Trade Supply (reseller). Typical delivery is a few business days in the contiguous United States; shipping to AK, HI and US territories is quoted before payment. Returns accepted within 30 days of delivery (new, unused, original packaging; customer pays return shipping). Terms, shipping & returns.
Part and size pages: Other 18x30x1 air filters · Other 18x30x1 MERV 11 filters
Help and how-to: How to choose an HVAC air filter MERV rating · What size furnace filter do I need? · Mini-split filter finder (Mitsubishi, Fujitsu, Daikin) · Which way does a furnace filter go? Reading the airflow arrow · How often should you change your furnace filter? · Can you put a HEPA filter in a furnace?