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Home Pool Pool & Spa Filters Sta-Rite Pool & Spa Filters Pentair Sta-Rite System:3 Modular Media Cartridge Filter | 300 sq. ft. | S7M120
NOTICE: The pool & spa industry continues to face industry-wide shortages on many products that most vendors expect to last late into 2022. We're allowing items to be purchased so that customers who choose to wait will have their order shipped when product is available. Most vendors are not providing any ETA on when items will be available. WE WILL EMAIL YOU RIGHT AWAY IF YOUR ITEM IS BACKORDERED. 

Pentair Sta-Rite System:3 Modular Media Cartridge Filter | 300 sq. ft. | S7M120

Pentair Sta-Rite System:3 Modular Media Cartridge Filter | 300 sq. ft. | S7M120 Pentair Sta-Rite System:3 Modular Media Cartridge Filter | 300 sq. ft. | S7M120
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Platinum Preferred Manufacturer
  • Quality Construction – Durable two-piece tank housing constructed of Dura-Glas™, Sta-Rite's industry leading glass-reinforced composite resin
  • Low Maintenance – Complete media coverage combined with shallow pleats means greater dirt holding capabilities, resulting in longer filter cycles and less cleaning
  • Quick Service – The shallow pleat design allows you to simply hose off the elements in a matter of minutes, making servicing a snap
  • Waterco MultiCyclone 50 Pre-Filter 2-Inch | 200375 200370
    Waterco MultiCyclone 50 Pre-Filter 2-Inch | 200375 200370


With System:3® Modular Media Filters - SM Series, Sta-Rite brings you the product that makes Ultra-Capacity Filtration a reality. No longer simply "cartridges," Sta-Rite's advanced technology has brought an entirely new class of filtration to the industry. Sta-Rite's modular media concept incorporates the latest in media science, perfectly balanced flow, and an integral manifold design: namely, Ultra-Capacity Filtration. This filtration concept puts totally care-free operation within reach of today's pool owners. Modular Filter Tanks allows for quick change of filter medias without changing the tank. Contemporary style and matte black finish looks attractive in any pool setting

An Eco Select Brand: Water flows very efficiently through System:3® Modular Media Filters - SM Series filters allowing the use of smaller pumps or lower pump speeds to minimize energy use. And when consumers rinse cartridges rather than backwash, they can significantly reduce water use, too.

  • Dual Drain Plugs Side plug available for plumbing to waste, while the bottom plug will drain entire filter
  • Safe- Posi-Lok clamps provide safe, easy access to tank internals
  • Patented Design - The patented, innovative balanced flow design first introduced with the System:3 Mod Media is still the standard of the industry. Protected by U.S. Patent Numbers 5,190,651 and 6,036,853

Brand: Pentair
Square Foot
Q & A
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Browse 9 questions Browse 9 questions and 9 answers
is this a complete filter with top and gauge?
A shopper on Jun 26, 2021
BEST ANSWER: Yes. It comes with everything you need. You will love it. Easy to maintain.
do cartridge n filter as i see on screen come as one for this price ?
kenneth p on Aug 26, 2016
BEST ANSWER: Yes, cartridge and filter included as a set, don't need to order anything extra to work
Can i use a backwash valve to drain pool ?
A shopper on Nov 24, 2021
BEST ANSWER: That should work but please open the air valve on the Sta-rite filter to avoid that you get a vacuum in it or water left in it.
Does this filter have a vacuum to waste valve?
A shopper on May 15, 2017
BEST ANSWER: No valves come with this unit; just the pressure gauge
I am replacing my old S7M120 I see the one you have on line. What else if anything would I need to replace my old one with your unit?
A shopper on Nov 16, 2015
BEST ANSWER: Nothing else is needed. The unit came complete with all needed o-rings and fittings to complete the install.
Upgrading from a DE FNS plus to this filter. Would like to upgrade to this. How can I add a waste without a valve. Do I need to purchase a 6 position valve?
A shopper on Nov 25, 2021
Hello, what is the weight of this filter?
A shopper on Jul 19, 2021
I have a Pentair Quad DE 60 system. Can I put non DE cartridge in system. If so which cartridge?
Peter K on Jan 31, 2021
Can you use the s7m120 on a above ground pool?
A shopper on Jun 27, 2020
4.8 / 5.0
8 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
The price was the best to be found and delivery was fast, even with the 4th of July holiday. I highly recommend this company.
July 20, 2019
over 2 years ago
Rated 5 out of 5
Heavy duty filter.I installed a Pentair pump recently and both have made my pool crystal clear.Very satisfied with your company and buying the Pentair items.
August 9, 2015
Rated 5 out of 5
Filter system replacement
This piece of equipment arrived in a very timely fashion. Earlier than expected which was great as the weather was hot and our pool was not filtering.
I was able to install the equipment easily and it seems to be working well. Just hope it continues.
June 25, 2019
over 2 years ago
Rated 5 out of 5
Great upgrade
Great price and delivery.
My water is crystal clear and looks refreshing.
September 6, 2020
1 year ago
Rated 5 out of 5
Wonderful filter
Filter arrived quickly and was packaged well. I appreciate how it comes fully assembled. It's good quality and maintains my pool the way I want it to. I recommend it.
February 4, 2015
Rated 5 out of 5
working well
Replaced an old DE filter on a gunite pool in FL
Water never looked this good!
Install was a snap!
May 21, 2018
over 4 years ago
Rated 4 out of 5
Good service good product
The price was cheaper than anywhere else I found the customer support was excellent and the product was superior
September 26, 2016
over 5 years ago
Rated 4 out of 5
Job well done
Bought a Pentair Sta-Rite System 3 modular media pool filter. Ordering was easy. But delivery was a pain because it didn’t arrive on the promised date but Isaac at PSU really helped sort things out with the trucking company for a delivery the next day. Isaac saved the day. I’m happy.
November 30, 2020
1 year ago
Adobe Acrobat PDF Data Sheet
Adobe Acrobat PDF Eco-Friendly Brochure
Adobe Acrobat PDF Owners Manual

Register your Pentair product online at www.pentair.com.

You've always been able to count on the quality and long service life of Pentair products. Pentair uses state of the art workmanship, materials and manufacturing processes to create the most innovative pool and spa equipment anywhere. And now Pentair products can deliver even more value and peace of mind, because Pentair offers extended warranty coverage on select products that are installed by a qualified installer*.
While the majority of Pentair products are covered by a sixty- (60) day warranty, a select number of products qualify for extended warranty coverage.
Select Bundled Products: applies to purchases and qualified installation of a minimum of a pump and filter, and one or more of the following: heaters, heat pumps, control systems, automatic cleaners, lighting, salt chlorine generators or UV sterilizer**
*Note: Qualified Installer - Defined as a licensed professional who charges a fee for his services, and possesses a business license, contractor's license and/or resale permit. Common examples of a "qualified installer" include: Swimming Pool, Home Repair or Landscape Professional; Plumber or Electrician; General Contractor; Heating and Air Conditioning Specialist.
**Note: Bundled products - must be purchased on the same invoice and installed at the same time. If any product within a bundle is ineligible for the bundled warranty coverage then all products within the same bundle will be disqualified from receiving the three (3) year extended warranty coverage for bundled products.
TradeGrade products must be purchased from a retail store (brick & mortar), pool builder or pool service company to receive a one-year, two-year or three-year warranty. If purchased online will only receive a sixty-day limited warranty. View the list of TradeGrade Products.
Ecommerce (EC) products: Products purchased from an Authorized Pentair Online Reseller (products beginning with EC-) receive a one (1) year (parts only) warranty from the date of purchase. The exceptions are: IntelliChlor cells and IntelliFlo SVRS pumps which receive a two (2) year warranty. EC products are not eligible for the bundled three (3) year extended warranty.
Visit www.pentair.com to submit your product warranty registration.
This information was updated on 11/19/2021. For the most current information and full warranty policy please visit www.pentair.com/warranty.

 Adobe Acrobat PDF Warranty Information
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Pool Supply Unlimited is an e-commerce company that loves water. We love to pump it, filter it, heat it, chlorinate it, light it up and stare at it while we're barbequing a fat, juicy steak. There are real pool professionals working here. Our guys have seen thousands of pools in their careers, no exaggeration. We are based in Southern California and can land most products to your door (within the 48 contiguous states) in less than a week.
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