Price History for Whole House 4.5 in x 10 in. Water Filtration CTO Carbon Block and GAC plus KDF Water Filter Cartridge Pack for WGB21B-KS
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Whole House 4.5 in x 10 in. Water Filtration CTO Carbon Block and GAC plus KDF Water Filter Cartridge Pack for WGB21B-KS
This pack includes one 10 in. x 4.5 in. GAC+KDF water filter (FG15B-KS) and one 10 in. x 4.5 in. CTO carbon block filter (FC15B) - the official replacements for the ISPRING whole house water filtration system W
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Price History Chart
Recorded price history
| Date | Price |
|---|---|
| Dec 14, 2025 | $68.65 |
| Nov 30, 2025 | $68.65 |
| Nov 20, 2025 | $68.65 |
| Nov 9, 2025 | $68.65 |
4 recorded prices; last found in Home Depot’s data on Nov 4, 2026. How we track prices
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Analysis
Whole House 4.5 in x 10 in. Water Filtration CTO Carbon Block and GAC plus KDF Water Filter Cartridge Pack for WGB21B-KS price analysis
Price analysis for Whole House 4.5 in x 10 in. Water Filtration CTO Carbon Block and GAC plus KDF Water Filter Cartridge Pack for WGB21B-KS at Home Depot: today's price of $68.65 is the only price we've recorded for this listing.
- Today's price matches the MSRP of $68.65.
- Today's price matches its average daily price over the last 90 days ($68.65).
- The lowest recorded price on PriceWatchPro was $68.65 on November 9, 2025. The current listing is at this all-time low.
- The highest recorded price on PriceWatchPro was $68.65 on November 9, 2025.
- No meaningful price drops recorded in the tracked history — this listing has held steady or trended upward.
- PriceWatchPro has been tracking this listing since November 9, 2025 (360 days of price history).
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