Unicel C-5396 Hot Tub Filter Coast Spas

The Unicel C-5396 is a premium replacement cartridge designed for select Coast Spas models that require the larger 5-5/16" diameter filter. Measuring 21-5/16" in length with 2-1/8" open holes at both the top and bottom, this filter delivers reliable performance and superior water clarity. Always verify dimensions to ensure a perfect fit for your spa.

Specifications:

• Part Number: C-5396

• Diameter: 5-5/16"

• Length: 21-5/16"

• Top: 2-1/8" Open

• Bottom: 2-1/8" Open

• Media Area: 100 sq. ft.

• Filter Media: 3 oz. Reemay® premium trilobal fabric

• Pleat Count: 222

Compatible Replacements:

• Pleatco PCST80

• Master Deluxe M51002

• ProAqua 1596

• Filbur FC-2975

• Waterway 817-0098

Extended Lifespan:
Most hot tub filters need replacement every 6–12 months. However, the Unicel C-5396 uses Reemay® premium trilobal filtration media, offering 45% more surface area than standard rounded fibers. With proper care and regular cleaning, it can last up to 18 months or more, depending on spa usage and maintenance routine.