---
product_id: 21569282
title: "Bag Filter, 155384, BP-420-1 Polypropylene 1 Micron, 4.5\" x 20\""
price: "RM254"
currency: MYR
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.my/products/21569282-bag-filter-155384-bp-420-1-polypropylene-1-micron-4
store_origin: MY
region: Malaysia
---

# 1 micron ultrafiltration precision High temperature resistance Chemical-resistant polypropylene Bag Filter, 155384, BP-420-1 Polypropylene 1 Micron, 4.5" x 20"

**Price:** RM254
**Availability:** ✅ In Stock

## Summary

> 🌀 Filter like a pro — precision and durability in one sleek package!

## Quick Answers

- **What is this?** Bag Filter, 155384, BP-420-1 Polypropylene 1 Micron, 4.5" x 20"
- **How much does it cost?** RM254 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/21569282-bag-filter-155384-bp-420-1-polypropylene-1-micron-4)

## 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

- • **Versatile Size:** Standard 4.5" x 20" fits most industrial filtration systems for easy integration
- • **Thermal Durability:** Operates reliably under high-temperature conditions to keep your process seamless
- • **Ultra-Fine Filtration:** Captures particles as small as 1 micron for pristine fluid clarity
- • **Chemical Compatibility:** Engineered to handle both acidic and alkaline fluids without degradation
- • **High Dirt-Holding Capacity:** Felt media design maximizes filtration lifespan, reducing maintenance frequency

## Overview

The BP-420-1 Bag Filter features a 1 micron polypropylene felt media that delivers ultra-fine filtration with exceptional chemical and thermal resistance. Sized at 4.5" x 20", it offers high dirt-holding capacity and compatibility with a broad spectrum of corrosive fluids, making it ideal for demanding industrial applications.

## Description

The Pentek BP-420-1 Filter Bag provides higher productivity with faster bag "change-outs." The bags are manufactured from felt because it can take on a heavy load of solids, in comparison to similar mesh fabrics. The manufacturing process involves multiple steps: layering together the felt material on a screen for support, then finishing it with a glaze for a secure bond. This is a product that can certainly hold its own as it filters dirt and debris.

Review: Saved me from having to empty my pool - I have a 18' Intex swimming pool that had a major attack of algae at the end of last season. I was thinking I was going to have to empty it. I then found these mentioned on a YouTube video, and decided to give it a try. Man, these guys are the real deal. The amount of junk it catches that the filter misses is phenomenal. They can be used by simply throwing them in the wash. I am thinking I will continue to use these throughout this season as it works better than the paper filters, and they are reusable. Inexpensive too. Thank you whoever makes these. If you have a dirty swimming pool, get these.
Review: Wish I would have installed a whole-house bag filter to the well long ago. - A minor inconvenience over the past couple decades with sediment and sand plugging up faucet screens and making their presence in the toilet tanks and setting a routine every two or three months of cleaning all the fixtures. With this bag filter setup there is little, if any perceptible pressure or flow loss and no sediment or sand in our water. Our plumber recommended we check it in six months to see how much is collected, and if the pressure gauge on the filter assembly is low, change the filter. The filter change process is very simple and relatively inexpensive compared to the extensive time for plumbing cleanings every couple of months as we did before the filter addition.

## Features

- 1 micron ultrafiltration
- Compatible with a wide range of acidic and alkaline fluids, and other corrosives
- Withstands high temperatures
- Manufactured with felt media for high dirt-holding capacity

## Images

![Bag Filter, 155384, BP-420-1 Polypropylene 1 Micron, 4.5" x 20" - Image 1](https://m.media-amazon.com/images/I/61sMmcOOO0L.jpg)
![Bag Filter, 155384, BP-420-1 Polypropylene 1 Micron, 4.5" x 20" - Image 2](https://m.media-amazon.com/images/I/71ZZBSPbwML.jpg)

## Questions & Answers

**Q: Has anybody tried using this with a Venturi style pool vacuum? If so, how well did it work?**
A: I found that these bags work every bit as well as the more expensive ones that our plumbing sub sold us. I will definitely reorder them.

**Q: if you pour water into this how long does it take to drain with just gravity?**
A: Don't know, we pump the water thru it with a pump. I think it would flow right it, with just gravity. A great filter.

**Q: Is this bag "food grade"**
A: Yes it is by definition of “Food Grade”

**Q: Can this be used to filter cold brew coffee?**
A: Not sure. Its ised to filter sediments from water so I'm mot sire why not. But I would think it is for cold water only.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Saved me from having to empty my pool
*by K***R on May 5, 2021*

I have a 18' Intex swimming pool that had a major attack of algae at the end of last season. I was thinking I was going to have to empty it. I then found these mentioned on a YouTube video, and decided to give it a try. Man, these guys are the real deal. The amount of junk it catches that the filter misses is phenomenal. They can be used by simply throwing them in the wash. I am thinking I will continue to use these throughout this season as it works better than the paper filters, and they are reusable. Inexpensive too. Thank you whoever makes these. If you have a dirty swimming pool, get these.

### ⭐⭐⭐⭐⭐ Wish I would have installed a whole-house bag filter to the well long ago.
*by B***N on November 14, 2025*

A minor inconvenience over the past couple decades with sediment and sand plugging up faucet screens and making their presence in the toilet tanks and setting a routine every two or three months of cleaning all the fixtures. With this bag filter setup there is little, if any perceptible pressure or flow loss and no sediment or sand in our water. Our plumber recommended we check it in six months to see how much is collected, and if the pressure gauge on the filter assembly is low, change the filter. The filter change process is very simple and relatively inexpensive compared to the extensive time for plumbing cleanings every couple of months as we did before the filter addition.

### ⭐⭐⭐⭐⭐ Filtered the pool water
*by B***Y on July 6, 2024*

I put it on my pool and worked great! Only took about 3 days of stirring/ added chemicals the pool to go from green to clear. After everything cleared up i took it off and let the cartridge filter maintain.

## Frequently Bought Together

- Bag Filter, 155384, BP-420-1 Polypropylene 1 Micron, 4.5" x 20"
- Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack)
- Pentek BP-420-5 Polypropylene Bag Filter

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-03-03*