About This

• [Perfect Fit for Lifesmart & Freeflow Spas] Specifically precision-engineered for the high-efficiency filtration systems of Lifesmart Spas, Freeflow, AquaTerra, Fantasy, and Watkins hot tubs. This matching 2-Pack set provides a professional-grade full system refresh, ensuring a secure hydraulic seal and crystal-clear water for your home sanctuary.
• [Verified OEM & Aftermarket Compatibility] A high-performance replacement for Watkins part numbers 303279, 78460, and Filbur FC-2402. Fully cross-compatible with Pleatco PFF42TC-P4, Unicel 5CH-37, and Lifesmart ACT-50SQFLTR. Engineered to meet or exceed OEM standards, it is the premier choice for reliable, tool-free installation across these popular spa series.
• [Precise Dimensions & Thread Verification] Dimensions: 9-1/2" L | 5-3/8" OD | Top: String Handle | Bottom: 1-1/2" MPT Thread. MUST VERIFY: The bottom features a specialized 1.5" Male Pipe Thread (MPT). It is specifically designed to replace 303279 and will NOT fit the smaller 303263 (6-inch) models. Please check your bottom connection and length before ordering to ensure a precise, leak-free 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.