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Tools & Home Improvement

Rain gutter downspout extender, drainage downspout extender, durable anti-aging material, 2-piece set, 21 extended to 63 inch distance switch to use, protect your home foundation safety BTOBI

Tools & Home Improvement4.3· 40 Amazon ratings

Bias-adjusted across 40 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Tools & Home Improvement.

41.5%
Percentile · Global
32.8%
Percentile · Cohort
Tools & Home Improvement
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Rain gutter downspout extender, drainage downspout extender, durable anti-aging material, 2-piece set, 21 extended to 63 inch distance switch to use, protect your home foundation safety BTOBI

How the score was built

Amazon ratings
40

used for the Bayesian percentile

Raw star average
4.3 / 5

unadjusted Amazon mean

Bayesian avg
4.29

raw rating shrunk to the category prior

Reviewer-graph z
-0.931

bias-corrected vs. each reviewer's baseline (0 qualifying)

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Same category · Tools & Home Improvement

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