Unicel C-8475 Replacement Filter for Coleman 103-3299 | 75 Sq. Ft.

Overview

The Unicel C-8475 is a pleated polyester cartridge filter element engineered for above-ground spa and portable spa circulation systems, providing 75.0 sq ft of filtration area through a high-pleat-count Reemay nonwoven polyester media pack. Dimensional specifications align with the Coleman/Maax 103-3299 form factor, with ABS injection-molded end caps configured for threaded-base seating to mate with the spa's integrated filter standpipe assembly. Media nominal filtration efficiency is rated at 15 microns under standard test conditions. End cap bond is formulated for sustained service at elevated spa operating temperatures, with continuous-duty rating to 104°F and short-duration tolerance to 120°F per Unicel testing protocol. The element's high sq ft rating delivers extended dirt-holding capacity between service cycles, reducing pressure-driven service frequency in high-bather-load portable spa applications.

Service interval recommendation for portable spa applications: rinse with fresh water every 2–4 weeks; chemical soak in dilute TSP or enzyme cleaner every 4–6 weeks to remove accumulated body oils, lotions, and surfactants that fresh-water rinsing alone will not displace. Replace cartridge at 12-month intervals under typical residential spa use, or earlier when ΔP rises ≥ 5 PSI above clean-filter operating baseline. Chemical compatibility: polyester media and ABS end caps tolerate continuous operation at ≤ 10 ppm free available chlorine or ≤ 30 ppm total bromine. Muriatic acid wash at 1:20 dilution is compatible for calcium scale removal (20-minute maximum exposure, followed by thorough fresh-water rinse). Enzyme cleaners are compatible without restriction. Standard Unicel 90-day manufacturing defect warranty applies through authorized distribution.

What's Included

Your order includes the selected quantity of replacement spa filter cartridges. Each unit is individually inspected for quality before shipping.