SKU: 69149550819

UNICEL POSI-FLO CARTRIDGE 135 SQ FT - UHD-SR135

Sale price$91.15 Regular price$101.28
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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14

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Description

UNICEL POSI-FLO CARTRIDGE 135 SQ FT - UHD-SR135The Unicel UHD SR135 Posi Flo replacement cartridge delivers professional grade filtration performance that pool contractors trust for commercial and high volume residential installations. With 135 square feet of filtration surface area and 195 precision pleats, this cartridge ensures crystal clear water quality while reducing maintenance frequency for your clients. Commercial Performance Benefits Engineered with spun bonded 100% polyester material,

The Unicel UHD-SR135 Posi-Flo replacement cartridge delivers professional-grade filtration performance that pool contractors trust for commercial and high-volume residential installations. With 135 square feet of filtration surface area and 195 precision pleats, this cartridge ensures crystal-clear water quality while reducing maintenance frequency for your clients.

Commercial Performance Benefits

Engineered with spun bonded 100% polyester material, this cartridge captures debris more effectively than standard filters while maintaining optimal flow rates. The 4 oz. media construction provides extended service life, reducing replacement costs and service calls. Compatible exclusively with stainless steel tanks, it ensures secure installation and prevents costly system failures.

Why Pool Professionals Choose MT Pools

As your trusted B2B partner, MT Pools provides wholesale pricing on quality filtration products with the superior customer service you need to keep projects on schedule. Our daily recurring customer support ensures you have reliable access to essential replacement parts when your clients need them most.

Frequently Asked Questions

Does the UHD-SR135 replace the discontinued Sta-Rite WC108-59S2X?

Yes, the Unicel UHD-SR135 is the direct replacement for the discontinued Sta-Rite cartridge filter WC108-59S2X, designed specifically for T-135TX Posi-Flo systems.

What are the exact dimensions for installation planning?

The UHD-SR135 measures 34-1/2 inches in length with an 8-11/16" outer diameter and 4-3/16" inner diameter with 12 concentric slots for secure fitting.

Is this cartridge compatible with all Posi-Flo systems?

The UHD-SR135 is designed specifically for stainless steel tanks and Sta-Rite T-135TX Posi-Flo filter systems only. Verify compatibility before installation.

Does MT Pools offer bulk pricing for service companies?

Yes, MT Pools provides competitive B2B wholesale pricing for pool service companies and contractors with volume discounts available for bulk orders.

Order Your Replacement Cartridges Today

Keep your filtration systems running at peak performance with reliable Unicel replacement cartridges from MT Pools. Contact our team for bulk pricing and technical support.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 69149550819

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4.4 ★★★★★
Based on 28 reviews
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Verified Purchase
Don
Grantham, US
★★★★★ 5
Easy to use
I built a bookshelf for my grandson and wanted adjustable shelves. This jig did the trick. Very easy to use, and a lot of adjustability. I have other tools by goingmake and they all are well made and affordable.
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Reviewed in the United States on August 30, 2025
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Verified Purchase
Riley
West Palm Beach, US
★★★★★ 5
Works very well and holds up over time!
This works really well for drilling out shelf pins! The drill bit that comes with it is a good quality bit, and the holes in the metal block are very strong, The drill bit doesn't even come close to cutting into them. I have drilled about 1000 holes with it so far, and it still works as good as it did when it was brand new! I would definitely recommend this over the plastic ones. It's very easy to use, as well.
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Reviewed in the United States on June 27, 2025
S
Verified Purchase
Steven K
Battle Creek, US
★★★★★ 5
Great item
Size: 9 Holes
Works great Would be nice to have another peg to make sure it stays in line. Just used a drill bit of the same size. Worth the investment
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Reviewed in the United States on March 4, 2026
K
Verified Purchase
Kindle Customer
San Leandro, US
★★★★★ 5
Game-Changer for Clean, Accurate Shelf Pin Holes!
This shelf pin jig absolutely delivered on everything I needed — the ease of use was fantastic right out of the box. Once I got the layout aligned, drilling was quick and precise. The accuracy is impressive, with clean, straight holes every time, and the included bits worked like a charm. The design is clever, compact, and durable — the aluminum plate feels premium and makes it easy to keep things straight. I love the versatility too; switching between 5mm and 1/4" bits was fast, and the guide holes are clearly labeled. The size is ideal for cabinets, bookcases, and even tighter spaces where a bulky jig wouldn’t fit. For anyone needing quick, repeatable shelf pin drilling, this jig speeds up the use and keeps your project moving fast without compromising quality. If you're doing any custom shelving or cabinet work, this is a must-have tool that saves time and eliminates guesswork.
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Reviewed in the United States on May 13, 2025
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Verified Purchase
Danielle Fassler
Chelsea, US
★★★★★ 4
Works well for DIY
Worked well for building bookshelf. Wish it maybe had som little pads on the back as some times it would slide a bit, but if I tightened it more it would dent the wood slightly. Overall very easy to use and worked well for its intended use.
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Reviewed in the United States on January 18, 2026

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