2" Universal Toilet Flapper, Rubber, Adjustable

Fluidmaster® PRO56 Adjustable Toilet Flapper – Technical Product Information

The Fluidmaster® PRO56 Adjustable Toilet Flapper is a professional-grade component engineered for precision performance and long-term reliability in 2-inch flush valve systems. Designed for compatibility across a wide range of tank models, the PRO56 provides adjustable water release settings, enabling system calibration for optimal flush volume efficiency from 1.28 to 3.5+ gallons per flush. Constructed with chlorine- and hard-water-resistant rubber and reinforced with a rigid frame, this flapper ensures consistent sealing, reduced maintenance frequency, and superior durability in commercial and residential plumbing installations.

Technical Specifications

• Manufacturer: Fluidmaster®
• Model Number: PRO56
• Product Series: PRO Series Adjustable Flappers
• Type: Adjustable 2" Toilet Tank Flapper
• Flapper Diameter: 2 inches (Standard Flush Valve Fit)
• Material Composition: Chlorine- and hard-water-resistant rubber with rigid frame
• Color: Red
• Adjustment Range: 1.28 – 3.5+ gallons per flush (adjustable via float setting)
• Mounting Type: Universal fit for most 2-inch flush valves
• Seal Mechanism: Solid-frame design for non-twisting alignment and secure closure
• Protective Additive: Integrated Microban® antimicrobial protection to inhibit bacterial degradation
• Chain Type: Pre-attached stainless-steel lift chain for easy installation
• Operating Environment: Suitable for high-chlorine and hard-water conditions
• Compatibility: Fits standard 2-inch flush valve systems from major manufacturers
• Operating Temperature: 40°F to 120°F (4°C to 49°C)
• Service Life: Extended-use design with 5-year limited warranty
• Compliance: Meets industry performance and water efficiency standards

Design and Performance Features

• Adjustable flapper allows calibration for optimal water usage per flush
• Microban® protection inhibits bacterial growth that contributes to material degradation
• Rigid frame prevents twisting and ensures consistent, reliable sealing
• Chlorine- and hard-water-resistant construction extends service life in demanding environments
• Universal 2-inch fit compatible with most tank models and manufacturers
• Pre-installed lift chain simplifies installation and adjustment
• Engineered for commercial and residential applications requiring precise water control

Professional Summary

The Fluidmaster® PRO56 Adjustable Toilet Flapper is a field-proven solution for contractors seeking a durable, adjustable sealing component for standard 2-inch flush systems. Its Microban®-infused, chlorine-resistant rubber construction and rigid frame design provide long-term resistance to twisting, warping, and material decay. The adjustable water volume feature allows for accurate flush calibration, improving performance and water efficiency across a wide range of tank configurations. Backed by a 5-year professional warranty, the PRO56 ensures dependable operation, reduced service intervals, and compatibility with most major toilet systems in both new and retrofit installations.