Unicel 5CH-502 Marquis & Cal Spas Filter – 50 Sq Ft | FC-0195

Unicel 5CH-502 Replacement Spa Filter Cartridge — 50 Sq. Ft.

The Unicel 5CH-502 is a premium 50-square-foot replacement hot tub filter cartridge designed for select Marquis Spas and Cal Spas hot tubs. Using quality 3 oz. filtration media, this cartridge captures dirt, body oils, debris, and other contaminants while maintaining proper water flow through your spa's filtration system — helping keep your water clean and clear.

This filter is the direct OEM replacement for Unicel part number 5CH-502 (formerly listed as C-5303) and cross-references with Filbur FC-0195, Pleatco PPM50SC-F2M, and several Marquis and Cal Spas OEM part numbers.

Specifications

• Unicel Part Number: 5CH-502
• Filter Area: 50 sq. ft.
• Outside Diameter: Approximately 5-3/16"
• Length: Approximately 12-1/2"
• Top: Bar handle for easy removal
• Bottom: 2" male MPT threaded connection
• Filter Media: 3 oz. filtration media
• Made in USA

Key Features

• Genuine Unicel 5CH-502 replacement spa filter
• 50 sq. ft. filtration area for efficient water cleaning
• Top bar handle for convenient, tool-free removal
• 2" male MPT threaded bottom connection
• Helps capture dirt, oils, debris, and contaminants
• Designed to maintain efficient spa water flow
• Designed for select Marquis Spas and Cal Spas hot tubs
• Made in USA

Compatibility — Commonly Used With

• Marquis Spas
• Cal Spas

Cross-Reference / Replacement Part Numbers

Customers searching for any of the following part numbers may find this filter to be a compatible replacement:

• Unicel: 5CH-502 | C-5303
• Filbur: FC-0195
• Pleatco: PPM50SC-F2M
• Marquis: 20041 | 20091 | 370-0237
• Cal Spas: FIL11100202
• Darlly: 50501
• Additional: XLS-522 | MA50

⚠️ Compatibility Notice

Spa filter compatibility can vary by model and year. Before ordering, please verify that your existing filter matches the Unicel 5CH-502 by comparing the manufacturer part number, outside diameter (~5-3/16"), length (~12-1/2"), top configuration (bar handle), and 2" male MPT threaded bottom connection.

Why Buy From Red Rock Spas?

Red Rock Spas supplies premium hot tub filters, replacement spa parts, water-care products, and spa accessories. If you're not sure whether the Unicel 5CH-502 is the correct replacement filter for your hot tub, our team can help you identify the right filter — just reach out before ordering.