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Representative image — tap to enlarge3MROP416-20A 3M Undersink Reverse Osmosis Replacement Filter Cartridge
$64.75
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-WF-1B1A7B |
|---|---|
| Brand | 3M |
| Item no. | 3M-3MROP416-20A |
| 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 number: 3MROP416-20A
Help and how-to: Waterdrop RO replacement filters by system · Whole-house water filter housing stuck or leaking: how to change the cartridge