Sta-Rite Mod Media Replacement Cartridge Set for S7M400 | 170146
Pentair
SKU: PEN170146
Pentair Sta-Rite 170146 Inner & Outer Cartridge Pack (400 sq ft)
Part Number: 170146
Description
This genuine Pentair replacement cartridge pack is designed for the Sta-Rite System 3 S7M400 modular media filters. The pack includes both the inner cartridge (approximately 136 sq ft) and the outer cartridge (approximately 264 sq ft), delivering a combined 400 sq ft of filtration area.
Compatibility & Fitment
- Specifically fits Sta-Rite System 3 S7M400 filters.
- Used when filter media is worn, flow has dropped off, or cleaning frequency has increased.
- Suitable for in-ground pools where the S7M400 filter is installed.
Features & Specifications
- Total filtration area: ~400 sq ft (136 sq ft inner + 264 sq ft outer).
- Cartridges are made of reinforced pleated polyester media with durable polyurethane end caps.
- Designed for easy install and long service life before replacement.
- OEM Pentair/Sta-Rite part ensures correct fit and optimal hydraulic efficiency.
Installation Notes
Turn off the pump and relieve system pressure. Open the filter tank and remove the existing inner and outer cartridges. Inspect the housing and manifold for debris or damage. Install the new cartridges with the outer cartridge around the inner cartridge as per tank assembly, close the lid and restore circulation. Monitor filter pressure and backwash/clean when pressure rises approximately 8–10 psi above baseline.
Maintenance Tip
Clean the cartridges periodically (every 4-6 weeks depending on usage and debris load). Replace the pack when permanent loading has reduced flow and cleaning no longer restores pressure or clarity. Using the full 400 sq ft pack helps extend time between service and maintains consistent water clarity.
SKU: 170146
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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