Pleatco PRB18-4 replacement filter cartridge, 18 square feetPleatco PRB18-4 Filter Cartridge, 18 Sq Ft In stock$3499
Pleatco PRB18-4 replacement filter cartridge, 18 square feet
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Pleatco PRB18-4 Filter Cartridge, 18 Sq Ft

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$3499
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Quick overview

  • Pleatco PRB18-4 The Pleatco replacement element, part number PRB18-4.
  • 18 square feet Rated at 18 sq ft of filter area.
  • Module and Rainbow filters Listed for Standard and High SF Module Filters in the MX Series, Lifeguard CL 29x and Rainbow housings.
  • Pentair housings The filter manufacturer on this listing is Pentair.
  • Listed dimensions Outside diameter 2-7/8 in, length 29-1/4 in.
  • Measure before you order Cartridge part numbers are reused across sizes, so check your old element against the listed diameter and length.
Full description and specifications ↓

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Product details

The Pleatco PRB18-4 is a replacement filter cartridge rated at 18 square feet of media area. Pleatco lists it for Standard and High SF Module Filters in the MX Series, for Lifeguard CL 29x housings and for Rainbow filters, with Pentair given as the filter manufacturer.

When to change a cartridge

A cartridge does not fail all at once. Pressure creeps up, flow drops off, and cleaning brings the pressure down for a shorter stretch each time. Once a wash no longer restores normal running pressure, the pleats are loaded or broken down and a new element is the fix.

Check the size first

This listing gives an outside diameter of 2-7/8 in and a length of 29-1/4 in. Cartridge families reuse part numbers across several sizes, so measure the element you are replacing and compare it against those numbers before ordering.

Specifications
Brand Pleatco
Manufacturer part number PRB18-4
UPC 799932634369
Square footage 18
Outside diameter 2-7/8"
Length 29-1/4"
Filter manufacturer Pentair
Fits Standard and High SF Module Filters (MX Series), Lifeguard CL 29x, Rainbow
Shipping weight 0.77 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

How much filter area does it have?
It is rated at 18 square feet.
Which filters is it listed for?
Standard and High SF Module Filters in the MX Series, Lifeguard CL 29x and Rainbow filters.
What size is the cartridge?
The listing gives an outside diameter of 2-7/8 in and a length of 29-1/4 in. Compare those to the element you are pulling out before you buy.
Is it a genuine Pleatco element?
Yes, it is the Pleatco PRB18-4.
Ask your own question