--- product_id: 488891739 title: "SpiroPure Hot Tub Filter Replacement for Cal Spa - 50 Sq Ft Spa Filter Cartridge - Compatible with Pleatco PWW50L, Unicel 4CH-949, Filbur FC-0172, Waterway 817-4050 - 5\" OD x 13 1/16\" L" price: "VT18037" currency: VUV in_stock: true reviews_count: 8 url: https://www.desertcart.vu/products/488891739-spiropure-hot-tub-filter-replacement-for-cal-spa-50-sq store_origin: VU region: Vanuatu --- # 4.9" outer diameter precision fit 2" female SAE threaded bottom for secure install 50 sq ft high-capacity filter media SpiroPure Hot Tub Filter Replacement for Cal Spa - 50 Sq Ft Spa Filter Cartridge - Compatible with Pleatco PWW50L, Unicel 4CH-949, Filbur FC-0172, Waterway 817-4050 - 5" OD x 13 1/16" L **Price:** VT18037 **Availability:** βœ… In Stock ## Summary > πŸ’§ Elevate your spa game with the filter that keeps you crystal clear! ## Quick Answers - **What is this?** SpiroPure Hot Tub Filter Replacement for Cal Spa - 50 Sq Ft Spa Filter Cartridge - Compatible with Pleatco PWW50L, Unicel 4CH-949, Filbur FC-0172, Waterway 817-4050 - 5" OD x 13 1/16" L - **How much does it cost?** VT18037 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/488891739-spiropure-hot-tub-filter-replacement-for-cal-spa-50-sq) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** Durable inner core boosts strength without sacrificing water flow - β€’ **Eco-Smart Longevity:** Over 20 cleaning cycles keep your spa pristine and save replacement costs - β€’ **Effortless Installation:** Closed handle top and threaded bottom ensure a perfect, hassle-free fit - β€’ **Universal Compatibility:** Fits top spa brands like Cal Spa, Pleatco, Unicel, Filbur & more - β€’ **Crystal Clear Every Time:** Advanced 50 sq ft media traps more dirt for sparkling spa water ## Overview The SpiroPure Replacement Cartridge is a premium, durable spa filter designed with 50 sq ft of high-efficiency media and a robust inner core for superior dirt holding and water flow. Measuring 4.9" in diameter and 13.5" in length, it features a closed handle top and 2" female SAE threaded bottom for easy, secure installation. Compatible with leading spa brands, it delivers long-lasting performance and over 20 cleaning cycles, ensuring your hot tub water stays sparkling clean and inviting. ## Description Product description Compatible Hot Tub Spa & Pool Brands Cal Spa Down East Dynasty Spas Four Winds Spa Ft. Wayne Spas Garden Leisure Hydropool Industries Master Spas Premium Leisure Rising Dragon Serenity Spas Sunrise Spas Waterway Plastics Compatible Numbers 4CH-949RA, 4CH-949, 817-4050, AK-90091, FC-0172, FC0172M, FIL50-5D13H15FCT, FIL11100208, PC-0172, SP-PS-0172, PWW50L-M, PWW50L, X268553, XLS-479 Clear, Sparkling Water Enjoy your pool and spa without worrying about the cleanliness of your water. SpiroPure filters ensure your water is crystal clear and free of dirt, hair, sediment, and other contaminants. Durable Filtration Performance SpiroPure filters offer high performance filter media, durable end caps, and strong cores and bands for a long-lasting filter life. Our cartridges hold up to high pressure without restricting water flow. Efficiently removes contaminants from water without restricting water flow Keeps pools and spas clean, fresh, and inviting Affordable quality filtration that won’t break the bank Review: Good quality filter - Correct filter for my spa. Came in 2 days. Review: Excellent product. - Fits my CalSpa 1325 SwimJet perfectly! Looks and fits like OEM equipment and cleans water as I expect. Water is crystal clear. Additionally, I have owned another pair of these filters and have gotten over 20 cleaning cycles out of the old ones. Old pair still looks and smells great...will be keeping them for backups! ## Features - Outer Diameter: 4 15/16" Length: 13 1/2" Top Style: Closed Handle; Bottom Style: 2" Female SAE Threaded; Media: 50 SF - Compatible with Cal Spa FIL50-5D13H15FCT FIL11100208 Pleatco PWW50L PWW50L-M Unicel 4CH-949 Filbur FC-0172 FC0172M Waterway 817-4050 Baleen AK-90091 Pure N Clean PC-0172 Hot Tub Spa Filter. - SpiroPure pool and spa filter cartridges offer long-lasting, durable filter media with high dirt holding capacity for clear, sparkling water in your pool or hot tub spa. - A strong inner core means increased strength without hindering water flow or filtration performance. - Easy to install, durable filter cartridges that allow for high filtration performance and efficiency ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #90,926 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #330 in Cartridge Pool Filters | | Customer Reviews | 4.4 out of 5 stars 68 Reviews | ## Images ![SpiroPure Hot Tub Filter Replacement for Cal Spa - 50 Sq Ft Spa Filter Cartridge - Compatible with Pleatco PWW50L, Unicel 4CH-949, Filbur FC-0172, Waterway 817-4050 - 5" OD x 13 1/16" L - Image 1](https://m.media-amazon.com/images/I/31jFqpmeS0L.jpg) ![SpiroPure Hot Tub Filter Replacement for Cal Spa - 50 Sq Ft Spa Filter Cartridge - Compatible with Pleatco PWW50L, Unicel 4CH-949, Filbur FC-0172, Waterway 817-4050 - 5" OD x 13 1/16" L - Image 2](https://m.media-amazon.com/images/I/71Hi2Ddq8aL.jpg) ![SpiroPure Hot Tub Filter Replacement for Cal Spa - 50 Sq Ft Spa Filter Cartridge - Compatible with Pleatco PWW50L, Unicel 4CH-949, Filbur FC-0172, Waterway 817-4050 - 5" OD x 13 1/16" L - Image 3](https://m.media-amazon.com/images/I/81x9Nk6CI0L.jpg) ![SpiroPure Hot Tub Filter Replacement for Cal Spa - 50 Sq Ft Spa Filter Cartridge - Compatible with Pleatco PWW50L, Unicel 4CH-949, Filbur FC-0172, Waterway 817-4050 - 5" OD x 13 1/16" L - Image 4](https://m.media-amazon.com/images/I/91dc+HO4zGL.jpg) ![SpiroPure Hot Tub Filter Replacement for Cal Spa - 50 Sq Ft Spa Filter Cartridge - Compatible with Pleatco PWW50L, Unicel 4CH-949, Filbur FC-0172, Waterway 817-4050 - 5" OD x 13 1/16" L - Image 5](https://m.media-amazon.com/images/I/81gq30KHizL.jpg) ## Available Options This product comes in different **Item Package Quantity** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good quality filter *by H***H on July 3, 2025* Correct filter for my spa. Came in 2 days. ### ⭐⭐⭐⭐⭐ Excellent product. *by J***D on November 18, 2023* Fits my CalSpa 1325 SwimJet perfectly! Looks and fits like OEM equipment and cleans water as I expect. Water is crystal clear. Additionally, I have owned another pair of these filters and have gotten over 20 cleaning cycles out of the old ones. Old pair still looks and smells great...will be keeping them for backups! ### ⭐⭐⭐⭐⭐ Perfect replacement *by D***6 on November 30, 2024* Perfect replacement from the filter that came with the tub. No complaints from me. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/488891739-spiropure-hot-tub-filter-replacement-for-cal-spa-50-sq](https://www.desertcart.vu/products/488891739-spiropure-hot-tub-filter-replacement-for-cal-spa-50-sq) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-06-07*