---
product_id: 298586684
title: "SimPure Upgrade Whole Water Filter Housing, 20 Inch Big Blue Filter Housing Universal Size Large Capacity House Filtration System, with Heavy Duty Steel Mounting Bracket, 4 Screws, Wrench (20\"x4.5\")"
brand: "simpure"
price: "¥75115"
currency: JPY
in_stock: false
reviews_count: 5
category: "Sim Pure"
url: https://www.desertcart.jp/products/298586684-simpure-upgrade-whole-water-filter-housing-20-inch-big-blue
store_origin: JP
region: Japan
---

# 20 GPM max flow 1" NPT brass port Includes wrench & mounting kit SimPure Upgrade Whole Water Filter Housing, 20 Inch Big Blue Filter Housing Universal Size Large Capacity House Filtration System, with Heavy Duty Steel Mounting Bracket, 4 Screws, Wrench (20"x4.5")

**Brand:** simpure
**Price:** ¥75115
**Availability:** ❌ Out of Stock

## Summary

> 💧 Elevate your home’s water game with leak-proof, pro-grade filtration!

## Quick Answers

- **What is this?** SimPure Upgrade Whole Water Filter Housing, 20 Inch Big Blue Filter Housing Universal Size Large Capacity House Filtration System, with Heavy Duty Steel Mounting Bracket, 4 Screws, Wrench (20"x4.5") by simpure
- **How much does it cost?** ¥75115 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/298586684-simpure-upgrade-whole-water-filter-housing-20-inch-big-blue)

## Best For

- simpure enthusiasts

## Why This Product

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

## Key Features

- • **Leak-Proof Upgrade:** Thickened, raised threaded holes eliminate long-term leaks
- • **Heavy-Duty Durability:** Reinforced polypropylene housing resists chemicals & NSF certified for safety
- • **Effortless Maintenance:** Built-in red pressure-relief button for quick, hassle-free filter changes
- • **Universal Compatibility:** Fits all standard 4.5" x 20" filter cartridges for ultimate DIY flexibility
- • **Complete Installation Kit:** Includes steel mounting bracket, screws, and wrench for seamless setup

## Overview

The SimPure DB20P whole house water filter housing is a robust, NSF-certified system designed for high-capacity filtration at 20 gallons per minute. Constructed from reinforced polypropylene with a heavy-duty steel mounting bracket, it features upgraded leak-proof threaded holes and a 1" NPT brass port for universal filter compatibility. The package includes all necessary installation tools and a built-in pressure-relief button for easy maintenance, making it the ultimate upgrade for clean, safe water throughout your home.

## Description

Enhance your water quality with the SimPure Whole House Water Filter Housing (DB20P), designed for both well and city water. This robust housing is made of reinforced polypropylene, ensuring strength and resistance to chemicals, with food-grade material for safe and healthy water. The upgrade design includes thickened and raised threaded holes to prevent leakage, and the built-in pressure-relief button simplifies filter replacement. The DB20P is compatible with universal standard 4.5” x 20” filters cartridges and fits for most whole house water filtration systems. It comes with all necessary tools for installation and is compatible with 1" NPT Brass port filters. Please note that the filters and push fittings are sold separately. The DB20P measures 10” in length, 7” in width, and 23.5” in height, and it is NSF certified. The package includes screws and an instruction manual. Please consider the space required for installation and replacement of the filter element.

Review: Seems to be a nice unit. Was simple to install. inclusion of some mounting screws would have been a nice touch. I installed it to filter bore water for my pool, so the install is a bit rough on my part but the unit seems to do the trick. Nice clean water coming through and no leaks from the housing. The ‘O’ ring is a little flimsy and could be more robust. Given the price it’s a pretty good unit. I am happy with it.
Review: We have well water with heavy sediment/heavy iron. We have a 100 micron, jumbo, self flushing spin down sediment filter that is INCREDIBLY EFFECTIVE, then this canister with a 50 micron filter, then finally a standard size whole house with a 5 micron filter. Because our problem was at times extreme, this set up effectively corrected our issue. The spin down back washes every 3 days, this large cartridge we hose the filter once monthly, this has extended the life of the 5 micron to requiring a change about every three months. When we started, we had a standard spin down, with a 200 micron filter, going straight to a 5 micron. Both would clog anywhere between 2-4 weeks. The key was to increase the pre filters (spin down and canister) to jumbo sizes, and to make sure the initial spin down is back washed every few days, and your filter screen sizes are the correct micron. This is what worked for us, and we had a big issue. Hope this helps the next guy.

## Features

- PREMIUM QUALITY: Tested against NSF standards. The whole house water filter housing is made of reinforced polypropylene for strength and resistance to chemicals. Food grade material makes all filtered water is reliable. If you need a more efficient whole-house water purification solution, choose our latest ultimate water purification solution: DB20P-3
- UPGRADE DESIGN: Compared to other inline water filter housing for leakage complaints, SimPure's 20" x 4.5" filter housing thicken and raises the threaded holes, making sure no water leaks from the mounting hole after long-term use
- EASY INSTALLATION: The BB filter housing comes with all tools required for installation, including a wrench, heavy-duty steel mounting bracket, 4 screws. The built-in red pressure-relief button for water pressure release, making it easier for filter replacement
- 1" NPT Brass PORT: The BB water filter housing with 1" NPT Brass thread. Per your water quality, you can choose the sediment filter, carbon water filter, etc for the DIY installation of the whole housing water filtration system. (The filters and push fittings need to be purchased separately)
- COMPATIBLE CARTRIDGES: The SimPure DB20 BB housing fits for universal standard 4.5 “ x 20 ” filters cartridges, fits for Whirlpool, Aqua-Pure, Geekpure, Ronaqua, etc. Also fits for the whole house water filtration system DIY. (Filter cartridges are sold separately)
- Note: Brass threads offer superior sealing. Avoid excessive use of Teflon tape during installation to prevent damaging the brass threads and causing more severe water leaks
- About O-ring: If you need an O-ring suitable for DB20P, please search for B09TR53SD1
- Tips: Given the large size of this whole house water filter housing, please consider the space required to install and replace the filter element according to the size of the product, whether it is suitable for your installation area

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | SimPure |
| Special Feature | NSF certified |
| Product Dimensions | 50.8L x 17.8W x 59.7H Centimeters |
| Package Information | Cartridge |
| Installation Type | Mounted |
| Power Source | Adapter |
| Model Name | DB20 |
| Maximum Flow Rate | 20 Gallons Per Minute |
| Upper Temperature Rating | 248 Degrees Fahrenheit |
| Supported Water TDS Level Maximum (PPM) | 1000 |
| UPC | 778695796590 |
| Manufacturer | SimPure |
| Country of Origin | USA |
| Item model number | DB20P |
| ASIN | B086XFC665 |

## Product Details

- **Brand:** SimPure
- **Special Feature:** NSF certified
- **Product Dimensions:** 50.8L x 17.8W x 59.7H Centimeters
- **Package Information:** Cartridge
- **Installation Type:** Mounted

## Images

![SimPure Upgrade Whole Water Filter Housing, 20 Inch Big Blue Filter Housing Universal Size Large Capacity House Filtration System, with Heavy Duty Steel Mounting Bracket, 4 Screws, Wrench (20"x4.5") - Image 1](https://m.media-amazon.com/images/I/41FIhIsON7L._SS100_.jpg)
![SimPure Upgrade Whole Water Filter Housing, 20 Inch Big Blue Filter Housing Universal Size Large Capacity House Filtration System, with Heavy Duty Steel Mounting Bracket, 4 Screws, Wrench (20"x4.5") - Image 2](https://m.media-amazon.com/images/I/41e7ecdrTOL._SS100_.jpg)
![SimPure Upgrade Whole Water Filter Housing, 20 Inch Big Blue Filter Housing Universal Size Large Capacity House Filtration System, with Heavy Duty Steel Mounting Bracket, 4 Screws, Wrench (20"x4.5") - Image 3](https://m.media-amazon.com/images/I/41iLkCgwtqL._SS100_.jpg)
![SimPure Upgrade Whole Water Filter Housing, 20 Inch Big Blue Filter Housing Universal Size Large Capacity House Filtration System, with Heavy Duty Steel Mounting Bracket, 4 Screws, Wrench (20"x4.5") - Image 4](https://m.media-amazon.com/images/I/41u4rIcj1+S._SS100_.jpg)
![SimPure Upgrade Whole Water Filter Housing, 20 Inch Big Blue Filter Housing Universal Size Large Capacity House Filtration System, with Heavy Duty Steel Mounting Bracket, 4 Screws, Wrench (20"x4.5") - Image 5](https://m.media-amazon.com/images/I/513-ia-S4oL._SS100_.jpg)

## Questions & Answers

**Q: How do i buy spare o-rings? i want to buy extra o-rings for my simpure b07v6ry5b4 filter 10" x 2.5". the links in all the answers are not correct.**
A: O-Ring Replacements for SimPure DB1025 (B07V6RY5B4)  - Link： 
https://www.amazon.com/dp/B0B7P1L17K

**Q: Does this remove rust/iron?**
A: That would depend on the filter installed in the housing. 

If you are dealing with large rust and other sediment particles in your water you should be fine with a 5 micron sediment filter. For wells I like pleated filters like this: https://amazon.com/dp/B074FW96PG. 

If iron is dissolved in your water, you need something that filters iron/manganese like this: https://amazon.com/dp/B09JWP92PD

**Q: How do you contact customer support?  The inlet and outlet ports leak no matter how much ptfe tape or thread sealant used.**
A: I put an O-ring (# 18) inside each port before the brass bushing.  Then I coated the threads with sealant and 10 wraps of teflon tape.  I think there may be a design flaw, it shouldn't be that difficult.

**Q: The filter housing leaks profusely. i checked the o-ring/tested it without a filter to no avail. anyone had this problem and been able to fix it?**
A: Try to lube the o-ring with some coconut oil or silicone lube and reassemble.  Also, if you are using carbon filters, I have seen that sometimes they are just a bit too tall, and so removing one of the gaskets allows the tank to be tightened a bit further, causing a seal. If you write to the company for support, they have a support rep out of Canada who is fantastic.  Be sure to include your Amazon order number and you may want to request a call back (specifically by phone) so that they will route it to him early.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***Y on 15 December 2022*

Seems to be a nice unit. Was simple to install. inclusion of some mounting screws would have been a nice touch. I installed it to filter bore water for my pool, so the install is a bit rough on my part but the unit seems to do the trick. Nice clean water coming through and no leaks from the housing. The ‘O’ ring is a little flimsy and could be more robust. Given the price it’s a pretty good unit. I am happy with it.

### ⭐⭐⭐⭐⭐ Review
*by L***H on 2 January 2026*

We have well water with heavy sediment/heavy iron. We have a 100 micron, jumbo, self flushing spin down sediment filter that is INCREDIBLY EFFECTIVE, then this canister with a 50 micron filter, then finally a standard size whole house with a 5 micron filter. Because our problem was at times extreme, this set up effectively corrected our issue. The spin down back washes every 3 days, this large cartridge we hose the filter once monthly, this has extended the life of the 5 micron to requiring a change about every three months. When we started, we had a standard spin down, with a 200 micron filter, going straight to a 5 micron. Both would clog anywhere between 2-4 weeks. The key was to increase the pre filters (spin down and canister) to jumbo sizes, and to make sure the initial spin down is back washed every few days, and your filter screen sizes are the correct micron. This is what worked for us, and we had a big issue. Hope this helps the next guy.

### ⭐⭐⭐⭐ Review
*by V***Y on 9 October 2025*

I would have given it a five star, but the pressure relief leaks.

## Frequently Bought Together

- SimPure Whole House Water Filter Housing (DB20P), 20" x 4.5" Sediment Carbon Filter Universal Housing, Pre-Filtration System for Well and City Water, 1" NPT Port, Pressure Release
- 10" x 4.5" Whole House Sediment Water Filter, SimPure 5 Micron 10-inch Big Water Filter Replacement Cartridge Compatible with W15-PR, DGD-5005, FP15B, HD-950A, GXWH35F, GXWH30C for Well Water 4-Pack
- 5 Micron 10" x 4.5" Sediment and Carbon Whole House Water Filters SimPure Replacement Cartridge for GE FXHTC, GXWH40L, RFC-BB / 155141-43, FC15B, HB18B, WRC25HD, WDGD-5005, W10-PR, W15-PR, 3-Pack

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-05*