Fluidmaster PerforMAX Flapper
Score: 88/100
American Standard 3-Inch Flapper
Score: 70/100Rankings
The Fluidmaster 502P21 PerforMAX is a universal, adjustable 2-inch toilet flapper designed to resolve weak flushes, running toilets, and water waste in toilets with 1.28, 1.6, or 3.5+ GPF ratings. It features a dial-adjustable mechanism for customizing flush volume, Microban antimicrobial protection, and a solid frame to prevent twisting during operation. It is best suited for homeowners with most 2-inch flush valve toilets experiencing weak flushes, running toilets, double flushes, or high water use.
The American Standard 738920-0070A is a genuine OEM replacement toilet flapper assembly designed specifically for American Standard Cadet 3 model toilets. It offers a reliable, pre-assembled solution for standard 1.6 GPF flushing needs. However, its plastic construction and strict model compatibility limit its versatility and long-term durability compared to premium materials.
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|---|---|---|
2 inches | 3 inchesbest | |
1 countbest | 1 countbest |
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| Attribute | | |
|---|---|---|
Material & Durability(2) | ||
Material | Rubber/Plastic | Plastic |
Seal Type | Solid Frame | Standard |
Design & Features(3) | ||
Chain Adjustability | true | false |
Installation Type | DIY | Direct Replacement |
Flapper Type | Adjustable Flapper | Standard Flapper |
Packaging & Support(1) | ||
Warranty Period | 5 Years | 1 Year Limited |
Compatibility & Fit(6) | ||
Flush Valve Compatibility | Universal | American Standard Cadet 3 |
Universal Fit | true | false |
Flapper Diameter (inches) | 2 inches | 3 inches |
Toilet Type Compatibility | Standard | Two-Piece |
GPF Compatibility | 1.28-3.5+ | 1.6 |
Flush Valve Size | 2 | 3 inch |
Products in the top-left offer the best value (high score, low price).
Professional reviewers, including Home Improvement Expert Bob Vila, rate the Fluidmaster 502P21 as the best overall 2-inch flapper for addressing running toilets. It is praised for its ability to fix weak flushes, double flushes, and water waste. Manufacturer sources describe it as the 'gold standard' and 'high performance standard' due to its durability, adjustability, and Microban protection.
Search results do not provide direct consumer quotes or aggregated star ratings. However, implied praise from product pages suggests users value the reliable sealing, water savings, and ease of use for fixing running toilets. No recurring complaints are detailed in the available data.
