---
product_id: 142628826
title: "POOLPURE PLFPRB25-IN Hot Tub Filter Replace Unicel C-4326, Guardian 413-106, Filbur FC-2375, FC-2370, 3005845, 17-2327, 100586, 33521, 25392, 817-2500, 5X13 Drop in Spa Filter 1 Pack"
brand: "poolpure"
price: "422 kr"
currency: DKK
in_stock: true
reviews_count: 13
category: "Poolpure"
url: https://www.desertcart.dk/products/142628826-poolpure-plfprb25-in-hot-tub-filter-replace-unicel-c-4326
store_origin: DK
region: Denmark
---

# 13.3-inch length precision fit 25 sq.ft trilobal filtration area NSF/ANSI 50 certified safety POOLPURE PLFPRB25-IN Hot Tub Filter Replace Unicel C-4326, Guardian 413-106, Filbur FC-2375, FC-2370, 3005845, 17-2327, 100586, 33521, 25392, 817-2500, 5X13 Drop in Spa Filter 1 Pack

**Brand:** poolpure
**Price:** 422 kr
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your spa game with the filter that works as hard as you do!

## Quick Answers

- **What is this?** POOLPURE PLFPRB25-IN Hot Tub Filter Replace Unicel C-4326, Guardian 413-106, Filbur FC-2375, FC-2370, 3005845, 17-2327, 100586, 33521, 25392, 817-2500, 5X13 Drop in Spa Filter 1 Pack by poolpure
- **How much does it cost?** 422 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/142628826-poolpure-plfprb25-in-hot-tub-filter-replace-unicel-c-4326)

## Best For

- poolpure enthusiasts

## Why This Product

- Trusted poolpure brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Triple Surface Power:** Trilobal fiber design offers 3x more dirt adsorption for crystal-clear water all day.
- • **Universal Compatibility:** Fits top hot tub models including Unicel C-4326 & Filbur FC-2375 for seamless swaps.
- • **Built to Last 30% Longer:** Heavy-duty polyester fabric & reinforced core reduce replacements and costs.
- • **Effortless Clean & Reuse:** Patented dirt-locking tech releases trapped debris easily, slashing maintenance time.
- • **Ultra-Fine 50 Micron Filter:** Captures 99% of fine particles like hair, dust & leaves for sparkling spa water.

## Overview

The POOLPURE PLFPRB25-IN is a premium 5x13-inch drop-in hot tub filter featuring a 25 sq.ft trilobal filtration fabric that triples dirt capture efficiency. NSF/ANSI 50 certified for safety, it uses patented dirt-locking technology for easy cleaning and boasts a durable construction lasting 30% longer than standard filters. Compatible with leading models like Unicel C-4326 and Filbur FC-2375, it ensures crystal-clear, healthy spa water with minimal maintenance.

## Description

desertcart.com : POOLPURE PLFPRB25-IN Hot Tub Filter Replace Unicel C-4326, Guardian 413-106, Filbur FC-2375, FC-2370, 3005845, 17-2327, 100586, 33521, 25392, 817-2500, 5X13 Drop in Spa Filter 1 Pack : Patio, Lawn & Garden

Review: HIGH VALUE TO PERFORMANCE AND DURABILITY RATIO. - Hard to beat the value to performance ratio of this filter. I've used this particular filter on multiple bi-annual service and cleaning of our hot tub. The filter fits perfect and does it's job.
Review: No quality issues - Took a long time to arrive

## Features

- 🍀Specifications: Length: 13 5/16”; Outside Diameter: 5”; Top Hole: 2 1/8”; Bottom Hole: 2 1/8”; Filtration Area: 25 Sq.ft; Filter Material: Trilobal Filtration Fabric.
- 🍀Compatible Models: PLFPRB25-IN Pool Filter is compatible with PRB25-IN, Unicel C-4326, Filbur FC-2375, FC-2370, SD-00196, 303909, M-4326, 8172500, R173429. ★NOTE: This is a compatible replacement. Original manufacturers' names and part numbers are for reference only. POOLPURE stands as an independent brand.
- 🍀NSF/ANSI 50 Certified Safety: PoolPure pool and spa filter is tested and certified by IAPMO against NSF/ANSI 50 standards for material safety. All components are proven safe for long-term water exposure, ensuring no harmful substances are released. Protect your family’s health and enjoy cleaner, safer pool and spa water.
- 🍀Trilobal Filtration Fabric Design: The innovative trilobal fiber structure provides three times the adsorption surface area compared to conventional filter fabrics. It captures more dirt and sediment while maintaining consistent water clarity, even under frequent use—so you can enjoy crystal-clear water all day long.
- 🍀Patented Dirt-Locking Technology: Our exclusive dirt-locking structure efficiently captures debris and makes cleaning effortless. During rinsing, trapped dirt is released easily and thoroughly. The filter is simple to rinse, reusable, and significantly reduces both maintenance time and costs.
- 🍀50-Micron Fine Filtration: Upgraded with a 50-micron high-efficiency filtration layer, it effectively removes up to 99% of fine particles such as hair, leaves, dust, and sand. It keeps pool water sparkling clear for longer, reducing the need for frequent water changes and chemical use—saving you both time and money.
- 🍀Durable Heavy-Duty Construction: Made with 4 oz. thickened polyester filter fabric, reinforced ABS end caps, and a strengthened integrated core, this filter lasts over 30% longer than standard cartridges. It reduces replacement frequency and long-term maintenance costs, delivering greater value over time.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07MTBTZSV |
| Best Sellers Rank | #3,498 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #61 in Hot Tub Accessories |
| Customer Reviews | 4.8 4.8 out of 5 stars (3,628) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.3 pounds |
| Item model number | PLFPRB25-IN |
| Manufacturer | POOLPURE |
| Package Dimensions | 13.86 x 5.31 x 5.28 inches |

## Images

![POOLPURE PLFPRB25-IN Hot Tub Filter Replace Unicel C-4326, Guardian 413-106, Filbur FC-2375, FC-2370, 3005845, 17-2327, 100586, 33521, 25392, 817-2500, 5X13 Drop in Spa Filter 1 Pack - Image 1](https://m.media-amazon.com/images/I/41FOE-yAG+L.jpg)
![POOLPURE PLFPRB25-IN Hot Tub Filter Replace Unicel C-4326, Guardian 413-106, Filbur FC-2375, FC-2370, 3005845, 17-2327, 100586, 33521, 25392, 817-2500, 5X13 Drop in Spa Filter 1 Pack - Image 2](https://m.media-amazon.com/images/I/41io-XXMgHL.jpg)
![POOLPURE PLFPRB25-IN Hot Tub Filter Replace Unicel C-4326, Guardian 413-106, Filbur FC-2375, FC-2370, 3005845, 17-2327, 100586, 33521, 25392, 817-2500, 5X13 Drop in Spa Filter 1 Pack - Image 3](https://m.media-amazon.com/images/I/41ynTv+lKfL.jpg)
![POOLPURE PLFPRB25-IN Hot Tub Filter Replace Unicel C-4326, Guardian 413-106, Filbur FC-2375, FC-2370, 3005845, 17-2327, 100586, 33521, 25392, 817-2500, 5X13 Drop in Spa Filter 1 Pack - Image 4](https://m.media-amazon.com/images/I/512mcee9cgL.jpg)
![POOLPURE PLFPRB25-IN Hot Tub Filter Replace Unicel C-4326, Guardian 413-106, Filbur FC-2375, FC-2370, 3005845, 17-2327, 100586, 33521, 25392, 817-2500, 5X13 Drop in Spa Filter 1 Pack - Image 5](https://m.media-amazon.com/images/I/51csSv337IL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Are these filters washable?**
A: Hello,   Yes they are washable.  We suggest to rinse your hot tub filters with clean water every week, this will help remove debris and protect your filter material. under regular washings, hot tub filters will work more efficiently and last longer.

**Q: This is the same dimension as my oem filter, but why my oem filter listed at 50 sq.ft, while this filter is listed at 25 sq.ft?**
A: Hello edward m,  PLFPRB50-IN is 50 sq.ft. , while PLFPRB25-IN is 25 sq.ft.  Both filters are in the same size.  For PLFPRB50-IN, please refer to this link: https://www.amazon.com/dp/B07MTDB8KB,   thank you!

**Q: Is this replacement filter compatible with rainbow dynamic rtl-rcf 25qf?**
A: Yes, PLFPRB25-IN will replace Rainbow Dynamic 25. To make sure it fits your spa, we suggest to measure your old filter then compare with the specification. A slightly variance is acceptable.
The filter size:                                                                                                                                
Width: 5"
Height: 13 5/16"
Top: Open 2 1/8"
Bottom: Open 2 1/8"
Sq Ft: 25 sq ft

**Q: will this work on a sundance optima 850?**
A: Dear customer,
Thank you for your question, The filter you asked DOES NOT fit sundance optima 850.

## Customer Reviews

### ⭐⭐⭐⭐⭐ HIGH VALUE TO PERFORMANCE AND DURABILITY RATIO.
*by W***T on July 8, 2025*

Hard to beat the value to performance ratio of this filter. I've used this particular filter on multiple bi-annual service and cleaning of our hot tub. The filter fits perfect and does it's job.

### ⭐⭐⭐⭐⭐ No quality issues
*by R***. on December 4, 2025*

Took a long time to arrive

### ⭐⭐⭐⭐⭐ Good price
*by A***Y on August 11, 2025*

Fit and worked

## Frequently Bought Together

- POOLPURE PLFPRB25-IN Hot Tub Filter Replace Unicel C-4326, Guardian 413-106, Filbur FC-2375, FC-2370, 3005845, 17-2327, 100586, 33521, 25392, 817-2500, 5X13 Drop in Spa Filter 1 Pack
- FROG @Ease Replacement SmartChlor Cartridge for use with Hot Tub FROG @Ease Floating System - Hot Tub Sanitizer System Supports Less Chlorine Use - 3 Pack
- FROG @Ease Floating System for Hot Tubs - Quick & Easy Self-Regulating Hot Tub Sanitizer - Hot Tub Maintenance System with Sanitizing Minerals & SmartChlor Technology

---

## 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.dk/products/142628826-poolpure-plfprb25-in-hot-tub-filter-replace-unicel-c-4326](https://www.desertcart.dk/products/142628826-poolpure-plfprb25-in-hot-tub-filter-replace-unicel-c-4326)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-01*