Marquis 35Sq Ft BTM Thread Filter Cartridge 20042

The Marquis 35Sq Ft BTM Thread Filter Cartridge is an OEM replacement filter engineered specifically for Marquis Signature spas from 2010 to the present, ensuring a precise fit and reliable performance for your system. With 35 square feet of filtration area and a threaded bottom connection, it supports efficient circulation and clearer, more inviting water in your Marquis spa.

This cartridge is approximately 14" tall to the top of the handle and 5.25" in diameter, making it important to verify dimensions against your existing filter before ordering for proper compatibility. The bottom features a threaded connection that mates securely with the spa’s filter housing, helping prevent bypass and maintaining strong filtration flow.

Key features and benefits

OEM Marquis replacement for Signature Series models 2010‑present, helping maintain factory performance and water quality.
35 sq ft filter media provides ample surface area for capturing dirt, oils, and debris, supporting cleaner, clearer water between cleanings.
Approx. 14" height (to top of handle) and 5.25" diameter offer a snug, correct fit when replacing the original 20042 cartridge.
Bottom-threaded design ensures secure installation and optimal flow in Marquis systems designed for threaded filters.
Using genuine Marquis-approved filters helps protect pumps and heaters while supporting the ConstantClean filtration system’s efficiency and longevity.

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