System:3 Modular Media Filter S7M 400

System:3 Modular Media Filter S7M 400

170.00 LBS
Free Ground Shipping
System:3®Modular Media Filters - SM Series

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.



  • Typical Installation – Inground pools, inground hot tubs, and water features
  • Quality Construction – Durable two-piece tank housing constructed of Dura-Glas, Sta-Rite's industry leading glass-reinforced composite resin
  • 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
  • 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
  • Dual Drain Plugs – Side plug available for plumbing to waste, while the bottom plug will drain entire filter
  • Manuals
  • Brochures
  • Specs
  • More

Product Manuals and Guides



File Size & Type

System:3 SM Owner's Manual English 317.4 kb PDF

Data Sheets and Brochures



File Size & Type

System:3 Mod Media English 826.9 kb PDF
Green Brochure: Environmentally Responsible Products from Sta-Rite English 887.9 kb PDF

Product Specifications

      Turnover Capacity (In Gallons) (Flow Rate x 60 x Hours)    
Product Filter Area (Sq Ft) Flow Rated 1 GPM (Sq Ft) 6 Hour 8 Hour 10 hour Tank Port Size Carton Wt (Lbs)
S7M120 300 50 - 100 18 - 36,000 24 - 48,000 30 - 60,000 2 in. 120
S7M400 400 50 - 115 18 - 41,000 24 - 55,000 30 - 69,000 2 in. 125
S8M150 450 50 - 124 18 - 45,000 24 - 60,000 30 - 74,000 2 in. 147
S8M500 500 50 - 130 18 - 46,000 24 - 62,400 30 - 78,000 2 in. 150

1: Based on NSF rated flow range of 0.333 GPM per square foot for the S7M120. 0.288 GPM per square foot for the S7M400, 0.275 GPM for the S8M150 and 0.26 GPM per square foot for the S8M500.


Dimensional Drawings


File Size & Type

SM Series Filter 160.6 kb JPG

Performance Curves


File Size & Type

Curve 1 126.5 kb JPG


Product Description Approx. Ship. Weight (lbs.)
PKG 188 Union x 2" Slip Adapter – Pkg. of 2 1
PKG 189 Union x 2" FPT Adapter – Pkg. of 2 1
77703-0100 Union x 1-1/2" FPT Adapter – Pkg. of 2 1
77703-0101 Union x 1-1/2" Slip Adapter – Pkg. of 2 1
25021-0200S 100 sq. ft. Inner Replacement Module for S7M120 9
25022-0201S 200 sq. ft. Outer Replacement Module for S7M120 21
25021-0223S 136 sq. ft. Inner Replacement Module for S7M400 11
25022-0224S 264 sq. ft. Outer Replacement Module for S7M400 24
25021-0202S 191 sq. ft. Inner Replacement Module for S8M150 18
25022-0203S 259 sq. ft. Outer Replacement Module for S8M150 27
25021-0224S 209 sq. ft. Inner Replacement Module for S8M500 19
25022-0225S 291 sq. ft. Outer Replacement Module for S8M500 28
25021-0021 Modular Media Conversion Kit – S7M120/S7M400 (Order Modules Separately) 4
25021-0025 Modular Media Conversion Kit – S8M150/S8M500 (Order Modules Separately) 5


Product Images


NSF Certified

Note: No backwash valve required.
Note: Operating Limits – maximum continual operating pressure of 50 PSI. Pool/spa (bather) applications, maximum operating water temperature (internal filter) 104°F (40°C).

Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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