DEEKOOL PBF40M Spa Filter 2-Pack — Replacement for Pleatco PBF40, 6.25" x 8" Reusable Washable Cartridge

DEEKOOL PBF40M 2-pack are direct-fit replacement spa filters engineered to restore clean circulation and protect your hot tub’s plumbing and pump.

These DEEKOOL replacement cartridges are designed to match the Pleatco PBF40 and PBF40M form factor and work with Bullfrog/Wellspring 30 Coreless 10-00282 systems. Each filter uses a high-surface-area pleated material to trap debris before it reaches jets and equipment, and the cartridge dimensions and asymmetric openings let it seat properly in a range of spa housings. The set contains two reusable, washable cartridges — ideal for rotating during cleaning and keeping your spa water clear without frequent full replacements.

How do I know this filter fits my hot tub?

Measure your original cartridge and compare key dimensions: top and bottom hole diameters, overall length and outer diameter. DEEKOOL PBF40M matches the common Pleatco PBF40 measurements and has a larger bottom opening to accommodate notched mounting assemblies.

• Top opening: 3 3/8 inches (3.375")
• Bottom opening: 4 1/2 inches (4.5")
• Length: 6 1/4 inches (6.25")
• Outer diameter: 8 inches

What cleaning and maintenance does this cartridge require?

The cartridge is made from trilobal PET spunbond fabric that’s washable and reusable. Rinse with a hose regularly, soak with a filter cleaner for deep cleaning, and replace when fabric remains stained or clogged after cleaning.

• Rinse pleats with low-pressure water to remove surface debris
• Use a filter cleaning soak for oily residue or buildup
• Rotate cartridges so one can dry while the other is in use
• Replace after several seasons or when flow decreases

How should I install the DEEKOOL PBF40M cartridge?

Installation is straightforward but benefits from attention to orientation. The narrower opening goes upward; the wider bottom opening fits the spa’s notch. Line up the bottom notch so the cartridge locks, then secure the top cap without over-tightening.

• Insert narrow end (top) upward, wider end downward
• Align the bottom notch with the spa housing slot until it seats
• Thread the top cap in place, tightening snugly but not excessively
• Check for rotation—bottom should remain locked when seated

What particles and contaminants will this filter capture?

The pleated, dirt-locking media captures common spa contaminants while maintaining flow. It traps hair, leaves, sediment and fine particulates to reduce strain on pumps and keep water visually clearer between chemical treatments.

• Removes hair and skin particulates
• Captures leaves, twigs and larger debris
• Filters sand, dust and sediment from circulation
• Helps protect jets and heater assemblies from clogging

Who is this for: The DEEKOOL PBF40M 2-pack is for hot tub owners who need a Pleatco PBF40-style replacement or a compatible Bullfrog/Wellspring 30 Coreless cartridge and want washable, high-flow media. It suits anyone seeking an economical pair for rotation and maintenance, provided your spa matches the listed dimensions. If your spa was manufactured before 2017, check whether a filter cartridge adapter (10-00417) is needed; the cartridge does not fit STIL series spas.