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SWP - 20LD - 20" Large Diameter Spectrum String Wound Polypropylene Water Filter Range

SWP - 20LD - 20" Large Diameter Spectrum String Wound Polypropylene Water Filter Range

SWP-1-20LD

£93.60 Inc. VAT £78.00 Ex. VAT
£93.60 Inc. VAT £78.00 Ex. VAT
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SPECTRUM SWP 20LD: 20-inch Large Diameter String Wound Filter

The SPECTRUM SWP 20LD is a professional-grade, high-capacity depth filter built for critical infrastructure protection. Combining a 20-inch length with a 4.5-inch "Jumbo" diameter, this cartridge provides the ultimate surface area for high-turbidity and high-flow environments. It is the premier choice for protecting multi-stage RO systems, whole-building water supplies, and complex industrial process loops from sand, silt, and rust. The graded-density wound media ensures deep-bed filtration, preventing premature surface clogging and allowing for extended operational cycles in the most demanding industrial settings.

Why Choose the SWP 20LD Large Diameter?

  • Maximum Industrial Throughput: The combination of 20-inch length and large diameter (4.5") ensures minimal pressure drop, even in systems with high flow requirements.

  • Superior Dirt-Holding Capacity: Significantly reduces labor costs by extending the lifespan between filter changeouts compared to standard slimline or 10-inch cartridges.

  • Graded Density Depth Filtration: Computer-controlled winding captures larger debris on the exterior and finer particles deeper within the media, optimizing the total life of the cartridge.

  • Industrial Compatibility: Manufactured from 100% inert polypropylene, this filter is ready for rigorous chemical, metal finishing, and process applications.

3. Technical Specifications Table

Feature Specification
Model SPECTRUM SWP 20LD (Large Diameter)
Dimensions 20" Length x 4.5" Diameter (Jumbo/Big Blue)
Media Type Polypropylene (Wound)
Core Material Polypropylene (Inert)
Micron Range 0.5 – 150 µm
Max Temperature 65°C
Application High-flow Industrial Sediment Removal



SWP - 20LD - 20" Large Diameter Spectrum String Wound Polypropylene Water Filter Range

SWP - 20LD - 20" Large Diameter Spectrum String Wound Polypropylene Water Filter Range

£93.60 Inc. VAT £78.00 Ex. VAT
£93.60 Inc. VAT £78.00 Ex. VAT

Frequently asked questions

For full details on returns, refunds, eligibility, and timeframes, please refer to our complete Refund Policy here:

👉 Refund and Returns Policy

If you are unsure whether your item qualifies for return, please contact our team before sending anything back and we’ll be happy to help.

The 20LD provides double the media volume and surface area. For industrial systems, this translates directly to double the dirt-holding capacity and significantly longer intervals between maintenance, which is essential for reducing long-term operational costs.

Yes. "Large Diameter" (LD) is the industry standard term for 4.5-inch diameter cartridges, commonly referred to as "Big Blue" filters. The SWP 20LD is a direct replacement for all standard 20-inch x 4.5-inch jumbo housings.