Filter Type 28 (C-4401 / PRB17.5SFPR / SC726 / 40352 / WW35D) - Pair

In stock

Replacement for C-4401, PRB17.5SFPR, SC726, Darlly 40352 or Magnum WW35D to fit Beachcomber hot tubs, and others, with an open hole fitting. These filters are sold as a pair.

Grouped product items
Conventional Filter Type 28 (C4401 / PRB17.5SF) Pair
Conventional Filter Type 28 (C4401 / PRB17.5SF) Pair
More Information
Filter Diameter Measurement (cm)12.5cm (4 15/16")
Filter Length Measurement (cm)11.75 cm (4 5/8")
Filter Top FinishOpen Hole
Filter Bottom FittingOpen Hole
Hole Diameter5.4cm (2 1/8")
Filtration Area (sq ft)17.5 sq ft
Filbur ReferenceFC-2386
Unicel ReferenceC-4401
Pleatco ReferencePRB17.5SF PR
Magnum ReferenceWW35D
Darlly Reference40352
Great Barrier Ref.8516
Additional ReferenceSC726
EAN Barcode0709818566837

We know this filter fits the following makes of hot tub.

It is hard to keep up with all the manufacturers changes so it could also fit makes not shown here.

Apollo Beachcomber Spas Catalina Clearwater Spas D M Industries Dynasty Spas Freedom Spas Gulf Coast Spas HydroSpa Maax PDC Pinnacle Spas Spaform Thermo Spa Vita Spa Waterway

Conventional Filter Type 28 (C4401 / PRB17.5SF) Pair

NB These filters are sold as a pair.


A clean and fully functional hot tub filter is essential to maintain clean, clear healthy water. 

Surespa hot tub filters are manufactured in New Zealand using Reemay Advantage™ filter media which employs 100% polyester synthetic fibres to provide optimum filtration efficiency.

The high temperatures and a wet environment of a hot tub makes filter surfaces an ideal environment for the growth of bacteria. It is important to clean grease, scale and bacteria from your filters regularly using Surespa Powder Filter Cleaner and to replace hot tub filters approximately yearly.

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