About This

• [Complete 2-Filter System Set] Specifically precision-engineered as a matching 2-Pack set for the dual-filtration system in Hot Spring Limelight Series (2018–Present). One purchase provides a full system refresh for models including Pulse, Flair, Flash, Beam (BMI & II), and Prism, ensuring a secure hydraulic seal and optimal water circulation.
• [Verified OEM & Cross-Compatibility] A high-performance replacement for Watkins part numbers 78161 (Limelite 50), 78286, and 1642301-1. Fully cross-compatible with aftermarket models Pleatco PWK35B, Unicel C-6350, Filbur FC-3921, and Darlly 67501. Engineered to meet or exceed OEM standards for a seamless, tool-free installation.
• [Precise Dimensions & Fit Checklist] Dimensions: 14" L | 6-3/8" OD | 2" Open Ends (Top & Bottom). MUST VERIFY: This set is for 2" open-end systems only and will NOT fit older pre-2018 models or any spa requiring threaded filters. It serves as the ideal high-efficiency fiber alternative for expensive ceramic Tri-X systems (78372).
• [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.