About This

• [Perfect Fit for Watkins & Tiger River] Specifically precision-engineered for the filtration systems of Tiger River (Caspian, Bengal, Sumatran), Hot Spot (Tempo, Rhythm, Relay), and select Caldera Spas. This matching 2-Pack set ensures a precise hydraulic seal and optimal water circulation, providing a full system refresh for your luxury spa.
• [Verified OEM & Aftermarket Compatibility] A high-performance replacement for Watkins part numbers 31114, 71827, 71828, and Caldera 76136. This set is fully cross-compatible with Pleatco PWK65, Unicel C-8465, Filbur FC-3960, and Darlly 80651. Engineered to meet or exceed OEM standards for seamless integration.
• [Precise Dimensions & Fit Verification] Dimensions: 10-1/2" L | 8-1/2" OD | 3" Open Ends (Top & Bottom). Please verify your original filter's connection before ordering. This model features a specialized wide-diameter design with 3" open ends and will not fit spas requiring threaded or smaller-diameter filters. Trust the Swimara Pro-Grade choice for a secure fit.
• [Advanced 3 oz Pro-Grade Media] Our Pro Series is powered by premium triangular Trilobal fibers with integrated Dirt-Locking technology, capturing fine debris and contaminants down to 10 microns. This high-density 3 oz advanced media provides significantly more surface area than standard filters, maintaining a powerful "Balanced-Flow" that ensures superior clarity while protecting your pump from strain.
• [Non-Clumping Structural Integrity] Built for durability, our filters feature a reinforced center core and chlorine-resistant end caps to prevent cracking under high pressure. The rigid anti-collapse structure prevents pleats from "bunching," making the rinsing process 50% easier and extending the professional-grade service life to 12–24 months with proper maintenance. Note: Do not backwash; rinse only.