Sta-Rite 25021-0200S System 3 S7M120 inner replacement cartridge, 100 sq ftSta-Rite Cartridge 100 Sq Ft Inner Replacement, S7M120, 25021-0200S In stock$19999
Sta-Rite 25021-0200S System 3 S7M120 inner replacement cartridge, 100 sq ft
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Sta-Rite Cartridge 100 Sq Ft Inner Replacement, S7M120, 25021-0200S

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$19999
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Quick overview

  • Genuine Sta-Rite Factory cartridge 25021-0200S for the System 3 filter.
  • 100 square feet The inner element is rated at 100 square feet of filter area.
  • Inner element This is the inner cartridge; the System 3 also takes a separate outer cartridge.
  • S7M120 Listed for the Sta-Rite System 3 model S7M120.
  • Replace both elements together An inner and outer pair that has aged together should be changed together, or the new element carries the load.
  • Filter area is the point A collapsed or channeled element loses area, and pressure climbs faster after every clean.
Full description and specifications ↓

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Product details

The Sta-Rite 25021-0200S is the 100 square foot inner replacement cartridge for the System 3 model S7M120 filter. It is the genuine Sta-Rite element.

Inner and outer

The System 3 is built around a pair of elements, an inner and an outer, working together. This listing is the inner cartridge only, rated at 100 square feet. The outer cartridge is a separate part number, so check which one you actually need before ordering, and be aware that a filter running one new element against one exhausted one will not hold pressure the way a matched pair does.

When to replace

Cartridge elements do not fail dramatically. They lose area gradually as the pleats pack, channel or collapse, and the sign is a filter that climbs back to high pressure sooner after each cleaning than it used to. When cleaning stops buying you much time, the element is done.

Specifications
Brand Sta-Rite
Manufacturer part number 25021-0200S
UPC 022315304789
Type Inner replacement cartridge
Filter area 100 sq ft
Position Inner
Fits Sta-Rite System 3 S7M120
Shipping weight 10.2 lb
Ships Parcel

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Questions and answers

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

Is this the inner or the outer cartridge?
The inner. The System 3 uses an inner and an outer element, and the outer cartridge is a separate part.
What is the filter area?
100 square feet.
Which filter does it fit?
The Sta-Rite System 3 model S7M120.
Should I replace the outer cartridge at the same time?
Usually yes. The two elements age together, and putting a new inner against a tired outer leaves the new element doing more than its share.
Ask your own question