---
product_id: 240067459
title: "POOLPURE4CH-21 Spa Filter Replaces PTL18P4, PA13, PA17, 4CH-21, PDM25P4, Filbur FC-0121, 20245-238, PVT-25N, Baleen AK-9003, SD-00845, 18 sq.ft Screw in Male Fine(1 1/2\" MPT) Thread Filter 2 Pack"
brand: "poolpure"
price: "59392 Ft"
currency: HUF
in_stock: true
url: https://www.desertcart.hu/products/240067459-poolpure4ch-21-spa-filter-replaces-ptl18p4-pa13-pa17-4ch-21
store_origin: HU
region: Hungary
---

# 1-2 Years Service Life 18 sq. ft. Filtration Area NSF/ANSI 52 Certified POOLPURE4CH-21 Spa Filter Replaces PTL18P4, PA13, PA17, 4CH-21, PDM25P4, Filbur FC-0121, 20245-238, PVT-25N, Baleen AK-9003, SD-00845, 18 sq.ft Screw in Male Fine(1 1/2" MPT) Thread Filter 2 Pack

**Brand:** poolpure
**Price:** 59392 Ft
**Availability:** ✅ In Stock

## Summary

> 💧 Dive into Purity and Relaxation!

## Quick Answers

- **What is this?** POOLPURE4CH-21 Spa Filter Replaces PTL18P4, PA13, PA17, 4CH-21, PDM25P4, Filbur FC-0121, 20245-238, PVT-25N, Baleen AK-9003, SD-00845, 18 sq.ft Screw in Male Fine(1 1/2" MPT) Thread Filter 2 Pack by poolpure
- **How much does it cost?** 59392 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/240067459-poolpure4ch-21-spa-filter-replaces-ptl18p4-pa13-pa17-4ch-21)

## 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

- • **Crystal-Clear Water:** Experience unparalleled clarity and purity in your pool or spa.
- • **Effortless Maintenance:** Enjoy easy cleaning and a renewed filter after every wash.
- • **Versatile Compatibility:** Fits a wide range of models for ultimate convenience.
- • **Cost-Effective Durability:** Get top-notch quality without breaking the bank.
- • **Innovative Dirt-Locking Technology:** Say goodbye to contaminants with advanced filtration.

## Overview

The POOLPURE 4CH-21 Spa Filter is a high-quality replacement filter designed for various models, featuring a certified NSF/ANSI 52 rating. With a filtration area of 18 sq. ft. and innovative dirt-locking technology, it ensures superior water clarity and easy maintenance. Built to last, this filter offers a service life of 1-2 years, making it a cost-effective choice for spa and pool enthusiasts.

## Description

POOLPURE4CH-21 Spa Filter Replaces PTL18P4, PA13, PA17, 4CH-21, PDM25P4, Filbur FC-0121, 20245-238, PVT-25N, Baleen AK-9003, SD-00845, 18 sq.ft Screw in Male Fine(1 1/2" MPT) Thread Filter 2 Pack

## Features

- 【Certified Quality & Safety】 POOLPURE Pool and Spa filter proudly hold the NSF/ANSI 52 certification, tested and verified by IAPMO. Trust in POOLPURE to provide crystal-clear, purified water, enhancing your overall pool or spa experience. Dive into unmatched relaxation.
- 【Specifications】Length 8", Outside Diameter 4 5/8", Top: Handle; Bottom: 1 1/2" MPT/ Male Thread. Filtration Area: 18 sq. ft.; Filter Material: Trilobal Filtration Fabric.
- 【Compatibility Details】Designed to fit models:Pleatco: PTL18P4, Unicel: 4CH-21, Filbur: FC-0121, SD-00845, SD-00821, SD-00838, PTL18-XP, SD-01161, PTL18-4, SD-01363 and more. ★NOTE: This is a compatible part. Original manufacturers' names and part numbers are for reference only. POOLPURE stands as an independent brand.
- 【Superior Filtration】Our innovative "Dirt-Locking" technology ensures that the fabric captures significantly more contaminants than standard filters. Efficiently remove hair, leaves, dust, sediment, sand, and more, ensuring a clean and refreshing spa and hot tub experience.
- 【Effortless Cleaning】 The Trilobal Fabric Structure of the filter facilitates easy release of impurities during cleaning, ensuring the filter feels renewed after each wash. For optimal performance, it's recommended to clean the cartridges once a month.
- 【Durable & Cost-Effective】Featuring a unique Trilobal Filtration Fabric Structure, our filter excels in capturing a large volume of contaminants. It's also designed for easy cleaning and maintenance. With proper care, expect a service life of 1-2 years. We're dedicated to offering top-notch quality at an affordable price.

## Images

![POOLPURE4CH-21 Spa Filter Replaces PTL18P4, PA13, PA17, 4CH-21, PDM25P4, Filbur FC-0121, 20245-238, PVT-25N, Baleen AK-9003, SD-00845, 18 sq.ft Screw in Male Fine(1 1/2" MPT) Thread Filter 2 Pack - Image 1](https://m.media-amazon.com/images/W/MEDIAX_792452-T1/images/I/81M5uDkiyKL.jpg)
![POOLPURE4CH-21 Spa Filter Replaces PTL18P4, PA13, PA17, 4CH-21, PDM25P4, Filbur FC-0121, 20245-238, PVT-25N, Baleen AK-9003, SD-00845, 18 sq.ft Screw in Male Fine(1 1/2" MPT) Thread Filter 2 Pack - Image 2](https://m.media-amazon.com/images/W/MEDIAX_792452-T1/images/I/71Yh7LsPcHL.jpg)
![POOLPURE4CH-21 Spa Filter Replaces PTL18P4, PA13, PA17, 4CH-21, PDM25P4, Filbur FC-0121, 20245-238, PVT-25N, Baleen AK-9003, SD-00845, 18 sq.ft Screw in Male Fine(1 1/2" MPT) Thread Filter 2 Pack - Image 3](https://m.media-amazon.com/images/W/MEDIAX_792452-T1/images/I/71c8MYEIeRL.jpg)
![POOLPURE4CH-21 Spa Filter Replaces PTL18P4, PA13, PA17, 4CH-21, PDM25P4, Filbur FC-0121, 20245-238, PVT-25N, Baleen AK-9003, SD-00845, 18 sq.ft Screw in Male Fine(1 1/2" MPT) Thread Filter 2 Pack - Image 4](https://m.media-amazon.com/images/W/MEDIAX_792452-T1/images/I/71bUFAKsCkL.jpg)
![POOLPURE4CH-21 Spa Filter Replaces PTL18P4, PA13, PA17, 4CH-21, PDM25P4, Filbur FC-0121, 20245-238, PVT-25N, Baleen AK-9003, SD-00845, 18 sq.ft Screw in Male Fine(1 1/2" MPT) Thread Filter 2 Pack - Image 5](https://m.media-amazon.com/images/W/MEDIAX_792452-T1/images/I/61I54X1bGbL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Questions & Answers

**Q: Is it good?**
A: Yes the filters are great quality. Fit perfectly and didn’t have to go to the local pool/spa shop for filters.

**Q: I'm trying to find a pool filter with a lid like this one but i need a size a bit bigger then this size 8" by 4.5" Do you offer any other size filter?**
A: Dear customer, Thanks for your interest in our POOLPURE Spa Filter Replaces Pleatco PDM25P. Could you please contact us with your original filter model and size to help you have check? https://amazon.com/gp/help/contact-seller/contact-seller.html?marketplaceID=ATVPDKIKX0DER&sellerID=A3HTESCHZKVM2Z&ref_=v_sp_contact_seller

**Q: How many per pack?**
A: Dear Customer,
Thank you for sharing your question. This listing includes 1 pack.

**Q: Will this filter work for a Lifesmart part number 78459?**
A: Dear customer, Thanks for your interest in our POOLPURE 4CH-21 Spa Filter Replaces Pleatco PDM25P4, Sorry, this filter DOES NOT replace the model you mentioned.  You`ll find the compatible filter via link: https://www.amazon.com/dp/B08PZ7G88B?ref=myi_title_dp.

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-01-23*