--- product_id: 114095274 title: "Unicel 5CH-37 37.5 Square Foot Media Replacement Hot Tub Spa Filter Cartridge with 221 Pleats" price: "13133 kr" currency: ISK in_stock: true reviews_count: 8 url: https://www.desertcart.is/products/114095274-unicel-5ch-37-37-5-square-foot-media-replacement-hot store_origin: IS region: Iceland --- # 37.5 sq ft media surface 221 uniform pleats for max flow 100% polyester Reemay, chemical resistant Unicel 5CH-37 37.5 Square Foot Media Replacement Hot Tub Spa Filter Cartridge with 221 Pleats **Price:** 13133 kr **Availability:** ✅ In Stock ## Summary > 💧 Elevate your spa game with filtration that works as hard as you do! ## Quick Answers - **What is this?** Unicel 5CH-37 37.5 Square Foot Media Replacement Hot Tub Spa Filter Cartridge with 221 Pleats - **How much does it cost?** 13133 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/114095274-unicel-5ch-37-37-5-square-foot-media-replacement-hot) ## 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 - • **Optimized Water Flow:** 221 sharp, uniform pleats reduce pressure loss and boost debris-holding capacity—clean water, no compromises. - • **Effortless Maintenance:** Bar handle and 1.5-inch male thread design enable quick, hassle-free filter removal and replacement. - • **Perfect Spa Compatibility:** Fits Aquaterra and Hot Springs spas seamlessly—upgrade your spa experience without the guesswork. - • **Durable Chemical Resistance:** Constructed from 100% polyester Reemay material that withstands harsh spa chemicals and repeated cleanings. - • **Maximized Filtration Surface:** 37.5 sq ft of premium media traps particles down to 20 microns for crystal-clear spa water. ## Overview The Unicel 5CH-37 is a high-performance hot tub filter cartridge featuring 37.5 square feet of 100% polyester Reemay media with 221 pleats. Designed for optimal debris capture down to 20 microns, it ensures clear, fresh spa water while resisting chemical damage. Its durable end caps and ergonomic handle simplify maintenance, making it compatible with Aquaterra and Hot Springs spas for a reliable, long-lasting filtration upgrade. ## Description Featuring 37.5 square feet of 3-ounce basis weight media made of 100-percent polyester Reemay material, this Unicel 5CH-37 Cartridge Filter for Hot Tubs ensures high performance and dependable filtration over time. The uniform pleats and Reemay media deliver higher dirt-holding capacity and more time between cleanings. Plus, the smooth surface of the media makes it easy to maintain, resists degradation from chemicals, stands strong under pressure, and holds up to the rigors of multiple cleanings. For optimal lifespan, clean the elements as per instructions and use a soft brush cleaning tool or filter cleaner for easy maintenance. Please note that the cartridge life depends on routine maintenance and spa water chemistry. Change your filter when there is a shorter cycle between cleaning, low water flow rate or high differential pressure, when the media has a tear, or if the center core collapses. The end cap is made of durable plastic that resists damage from chemicals and includes a 1.5-inch male thread/MPT and a bar handle for easy removal and replacement. This 5CH-37 model of spa filters is compatible with Aquaterra Spas and Hot Springs Spas. The Unicel 5CH-37 Spa Cartridge Filter is clearly the optimal choice to keep your hot tub or spa water sparkling. Review: Works great! - This is the 2nd one of these we have purchased. It fits great and lasts a long time! We clean ours several times before needing to replace. Good product. Review: Product was as advertised and arrived as scheduled - product was as advertised and arrived as scheduled. ## Features - Replacement Spa Filter: 5CH-37 filter cartridge features 37.5 square feet (221 pleats) of 3-ounce basis weight media that catches debris and particles down to an average of 20 microns in size, keeping your hot tub water clear - Optimal Debris Capture: Hot tub filter has sharp, uniform pleat folds that maximize water flow, minimize pressure loss, and allow full use of the pleat surface to hold more debris - Filter Media: Constructed with 100-percent polyester Reemay material that balances dirt-holding capacity, cleanability and durability with excellent chemical resistance properties - Thread and Handle Type: Design includes a 1.5-inch male thread/MPT and a bar handle for easy cartridge removal and replacement; Durable end caps resist damage from chemicals - Spa Fitment: Compatible with Aquaterra Spas and Hot Springs Spas; OD: 5-5/16 inches, Length: 9 inches ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #162,431 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #565 in Cartridge Pool Filters | | Customer Reviews | 4.5 out of 5 stars 97 Reviews | ## Images ![Unicel 5CH-37 37.5 Square Foot Media Replacement Hot Tub Spa Filter Cartridge with 221 Pleats - Image 1](https://m.media-amazon.com/images/I/61c1fNlZeFL.jpg) ![Unicel 5CH-37 37.5 Square Foot Media Replacement Hot Tub Spa Filter Cartridge with 221 Pleats - Image 2](https://m.media-amazon.com/images/I/61V4uwRShgL.jpg) ![Unicel 5CH-37 37.5 Square Foot Media Replacement Hot Tub Spa Filter Cartridge with 221 Pleats - Image 3](https://m.media-amazon.com/images/I/61RhITyWqrL.jpg) ![Unicel 5CH-37 37.5 Square Foot Media Replacement Hot Tub Spa Filter Cartridge with 221 Pleats - Image 4](https://m.media-amazon.com/images/I/61pMVcL1DLL.jpg) ![Unicel 5CH-37 37.5 Square Foot Media Replacement Hot Tub Spa Filter Cartridge with 221 Pleats - Image 5](https://m.media-amazon.com/images/I/61iHFNziFcL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great! *by K***N on July 23, 2024* This is the 2nd one of these we have purchased. It fits great and lasts a long time! We clean ours several times before needing to replace. Good product. ### ⭐⭐⭐⭐⭐ Product was as advertised and arrived as scheduled *by C***N on December 24, 2025* product was as advertised and arrived as scheduled. ### ⭐⭐⭐ Not fully compatible with OEM filter *by G***L on May 30, 2024* Price was less, but the trade-offs diminished its value. Thread size for base is slightly smaller and the square footage of the filter paper is only 37.5 sq ft versus 50 sq ft for OEM filter. I had to add teflon pipe thread tape to get a secure fit. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.is/products/114095274-unicel-5ch-37-37-5-square-foot-media-replacement-hot](https://www.desertcart.is/products/114095274-unicel-5ch-37-37-5-square-foot-media-replacement-hot) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-08-08*