MadMax Trade Supply

Home › Under-Sink, RO & Whole-House Filters

Representative image: under-sink water filter cartridgesRepresentative image — tap to enlarge

MAXETW-FF20 Watts C-MAX Whole House Water Filter Cartridge — Single

$196.61

Includes contiguous-US shipping and sales tax (no tax line at checkout).

Purchase option

Renews automatically at the then-current price; we'll email you before any price change. Cancel anytime. Manage subscription

View cart

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.

SKUMM-WF-4D963C
BrandWatts
Item no.WATTS-MAXETW-FF20
Price checked2026-11-15
Returns30 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.

Help and how-to: Waterdrop RO replacement filters by system · Whole-house water filter housing stuck or leaking: how to change the cartridge