Waterdrop WD-F26B Water Filter
- External Testing Certification: NSF
- Product Benefits: Reduces Chlorine
- Material Type: Lead-Free Material, Food-Grade Material, Advanced Activated Coconut Carbon Block
- Number Of Packs: 1
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
An NSF-certified replacement filter cartridge sold in a 3-pack, worth it once you confirm the dimensions match your existing housing.
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ASIN: B01CA1V5MSModel: WD-F26BCategory: Household Water Filters
Overview
The Waterdrop WD-F26B is a replacement water filter cartridge sold in a 3-pack, certified to NSF/ANSI 42 and 372 standards. It's built to swap in wherever a compatible filter housing calls for this cartridge size.
NSF 42 certification covers chlorine taste and odor reduction, while NSF 372 confirms the cartridge is lead-free, both third party standards rather than marketing claims. At roughly 7.48 x 2.6 x 9.45 inches per unit and shipping as a 3-pack, this is a like for like cartridge swap rather than a full filtration system. The listing doesn't specify which appliance or housing it fits, so buyers should confirm cartridge dimensions against their own housing before ordering.
- NSF/ANSI 42 and 372 certified
- 3-pack of replacement cartridges
- Approximately 7.48 x 2.6 x 9.45 in per unit
- Lead-free construction per NSF 372
Who it's for
Households that already own a compatible filter housing and need a certified replacement cartridge in bulk rather than a single unit.
Pros and cons
- NSF/ANSI 42 and 372 certified
- Sold as a 3-pack, useful for stocking up
- No listed appliance compatibility, buyers must confirm fit themselves
- Not a standalone filtration system, requires an existing housing
Performance notes
NSF/ANSI 42 certification means the carbon media has been independently tested to reduce chlorine taste and odor, and NSF/ANSI 372 confirms lead-free construction, both meaningful third party checks rather than self reported claims. Actual filtration performance still depends on the housing it's installed in and how often the cartridge is changed.
Specifications
| Brand | Waterdrop |
|---|---|
| Model | WD-F26B |
| Dimensions & fit | |
| Item Weight | 0.66 poundslower than 85% of 35 household water filters |
| Item Dimensions D X W X H | 7.5 × 2.6 × 9.4 inches |
| Construction & materials | |
| Material Type | Lead-Free Material, Food-Grade Material, Advanced Activated Coconut Carbon Block |
| Included components | |
| Number Of Packs | 1 |
| Unit Count | 3 |
| Included Components | Month Install Stickers, Refrigerator Water Filter Replacement*3, User's Manual*1 |
| Other details | |
| External Testing Certification | NSF |
| Product Benefits | Reduces Chlorine |
| Number Of Items | 3 |
| Set Name | Bosch |
| Item Highlight | Replacement For 3M® Cuno CS-51, Whirlpool® WHKF-R-PLUS, EVOLFLTR10, W1085590, 51000, WD-F26B |
Closest rivals on specs
Culligan HAF-CIN Water Filter- Item Weight 0.66 vs 0.6 pounds (+10%)
Frequently asked questions
What does NSF 42 certification mean for the WD-F26B?
It means the cartridge has been independently tested to reduce chlorine taste and odor, a specific claim rather than general marketing.
Is the WD-F26B lead-free?
Yes, it carries NSF/ANSI 372 certification, which confirms lead-free construction.
How many filters come in the pack?
Three.