BLUEFLO S7M120 Pool Filter Cartridges – Inner & Outer Set for Sta-Rite SR300, System 3 S7M120, Pentair 300 sq ft

Upgrade Your Pool Filtration with BLUEFLO S7M120

Meet a two-in-one filtration solution designed to refresh your pool water without overhauling your system. The BLUEFLO S7M120 inner and outer cartridge set is engineered to fit multiple popular configurations, including System 3 S7M120, Sta-Rite 25021-0200S/25022-0201S, SR300, and Pentair 300 sq ft units. This pairing provides a balanced approach to filtration, pairing fine capture with robust surface area for longer intervals between cleans.

In everyday use, you’ll notice the difference when skimming or vacuuming reveals fewer visible particulates and a consistently clearer pool. While results depend on your pool conditions and maintenance routine, this replacement set is designed to support cleaner water and easier upkeep across a season or two of use.

What’s in the set and how it helps

• Outer diameter 8-3/4" and length 25-1/4"; filtration area around 100 sq ft. This section is tuned to trap smaller debris as water passes through.
• Outer diameter 16-1/2" and length 18-3/4"; filtration area around 200 sq ft. This larger section helps handle bulkier particles and contributes to overall filtration capacity.

The combination delivers a broader filtration footprint, which can translate to clearer water and a more stable balance of chlorine and other treatments over time.

Materials, performance, and durability

• High-density polyester fiber with excellent heat tolerance supports sustained performance in varying pool environments.
• Trilobal fabric with more pleats increases surface area, helping capture hair, leaves, dust, sediment, and sand more effectively.
• The trilobal material is designed to release trapped impurities more easily during cleaning, helping you restore flow with less effort.

These features work together to keep your pool water looking clear and inviting, while offering a straightforward replacement experience when maintenance is due.

Compatibility and installation notes

• Replaces Sta-Rite 25021-0200S & 25022-0201S System 3 S7M120 sets, and is compatible with SR300 and Pentair 300 sq ft configurations.
• Designed for easy swap with minimal disruption to your filtration cycle; follow your existing installation instructions for the best seal.

Whether you’re replacing aging cartridges or upgrading to longer-lasting components, this BLUEFLO set is built to integrate with common pool systems without requiring a different housing.

Why choose BLUEFLO for your pool filtration

Beyond compatibility, the combination of high-density fibers and trilobal fabric aims to provide reliable filtration, easy cleaning, and durable performance. Consider this set as a practical upgrade that supports clearer water and smoother maintenance, with benefits that are possible results of better filtration rather than guaranteed outcomes.