---
product_id: 48531999
title: "Studor 20297 Maxi-Filtra Septic Tank Drain Vent Two-Way Active Carbon Filter, 3- or 4-Inch Connection"
brand: "studor"
price: "$174.61"
currency: USD
in_stock: true
reviews_count: 8
category: "Studor"
url: https://www.desertcart.us/products/48531999-studor-20297-maxi-filtra-septic-tank-drain-vent-two-way
store_origin: US
region: United States of America
---

# Active carbon odor elimination Replaceable filter, 2-year lifespan 3-4 inch universal fit Studor 20297 Maxi-Filtra Septic Tank Drain Vent Two-Way Active Carbon Filter, 3- or 4-Inch Connection

**Brand:** studor
**Price:** $174.61
**Availability:** ✅ In Stock

## Summary

> 🌬️ Breathe Easy, Live Fresh – The Ultimate Septic Vent Upgrade

## Quick Answers

- **What is this?** Studor 20297 Maxi-Filtra Septic Tank Drain Vent Two-Way Active Carbon Filter, 3- or 4-Inch Connection by studor
- **How much does it cost?** $174.61 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/48531999-studor-20297-maxi-filtra-septic-tank-drain-vent-two-way)

## Best For

- studor enthusiasts

## Why This Product

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

## Key Features

- • **Retrofit Ready:** Easily upgrade existing plumbing systems without costly overhauls—perfect for modernizing your home’s drainage.
- • **Trusted & Tested:** Backed by EPA, IAPMO, and UPC certifications with 4.6-star reviews from 458 users who swear by its odor-banishing power.
- • **Seamless Septic Freshness:** Active carbon filter neutralizes odors instantly, keeping your space garden-party ready.
- • **Eco-Friendly & Replaceable:** Sustain freshness with a replaceable carbon filter lasting up to 2 years, reducing waste and maintenance.
- • **Universal Fit, Zero Hassle:** Fits standard 3- or 4-inch pipes with easy slip and compression connectors—no specialist needed.

## Overview

The Studor 20297 Maxi-Filtra is a high-performance two-way active carbon filter designed for 3- or 4-inch septic tank and lift station vents. It effectively eliminates sewer odors from entering buildings and surrounding areas, featuring a replaceable carbon filter with up to 2 years of life. Easy to install without specialists, it retrofits existing plumbing and meets EPA, IAPMO, and UPC standards, making it a trusted solution for odor control in residential and commercial drainage systems.

## Description

Great prices on your favourite Gardening brands, and free delivery on eligible orders.

Review: Installed after a new tank install was a bit smelly - Had a new tank and soak away install but have been getting an eggy smell the closer to the vent you were, had the tank inspected and it is working fine so the smell was nothing to worry about in that regard but it was off putting when in the garden, after installing this to the top of the vent the smell has gone and has not yet returned - took 5 mins to install and the results were immediate, would definitely recommend if anyone has similar vent smell - do get it checked before hand though as smells can be in indicator of potential issue 👍
Review: It worked - Seems to work. Replaced old unit with this and smell disappeared.

## Features

- Active carbon filter designed to eliminate bad odors produced by the drainage system
- Designed for use on septic tanks and lift stations; fits 3- or 4-inch piping
- Eliminates sewer gases from entering buildings and polluting the surrounding areas (when used as part of the complete Studor System); includes replaceable carbon filter (maximum life of 2 years) to remove bad odors and a rubber connecter
- Install externally anywhere the odor from existing vents presents a problem; no specialist installation required
- Can be retrofitted to existing plumbing systems (if all design and installation criteria are met); can also be used for buildings connected to main sewer line in some cases (contact Studor technical department to determine installation feasibility)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00FQEX1ZG |
| Best Sellers Rank | 16,122 in Garden ( See Top 100 in Garden ) 27 in Garden Drainage |
| Brand | Studor |
| Connector Type | Slip |
| Country of Origin | United Kingdom |
| Customer Reviews | 4.6 out of 5 stars 458 Reviews |
| Exterior Finish | Rubber |
| Exterior finish | Rubber |
| Global Trade Identification Number | 00764651202977 |
| Included Components | Instructional guide included |
| Inlet Connection Size | 3.5 Inches |
| Inlet Connection Type | Slip |
| Inlet connection size | 3.5 Inches |
| Inlet connection type | Slip |
| Item Dimensions | 8.9 x 8.9 x 15.2 centimetres |
| Item Weight | 0.01 Ounces |
| Item dimensions L x W x H | 8.9 x 8.9 x 15.2 centimetres |
| Manufacturer | IPS Corporation |
| Material | Acrylonitrile Butadiene Styrene Rubber |
| Model Number | 20297 |
| Number of Ports | 1 |
| Outlet Connection Size | 3.5 Inches |
| Outlet Connection Type | Compression |
| Size | 5.25 x 4.875 inches |
| Specification Met | EPA, IAPMO, UPC |
| Thread Size | 7,6 cm ou 10,2 cm |
| Thread Type | NPT |
| UPC | 764651202977 |
| Valve Type | thermostatic |

## Product Details

- **Brand:** Studor
- **Exterior finish:** Rubber
- **Inlet connection size:** 3.5 Inches
- **Inlet connection type:** Slip
- **Item dimensions L x W x H:** 8.9 x 8.9 x 15.2 centimetres
- **Material:** Acrylonitrile Butadiene Styrene Rubber
- **Number of ports:** 1
- **Outlet connection size:** 3.5 Inches
- **Outlet connection type:** Compression
- **Specification met:** EPA, IAPMO, UPC

## Images

![Studor 20297 Maxi-Filtra Septic Tank Drain Vent Two-Way Active Carbon Filter, 3- or 4-Inch Connection - Image 1](https://m.media-amazon.com/images/I/71YsFBN7fWL.jpg)
![Studor 20297 Maxi-Filtra Septic Tank Drain Vent Two-Way Active Carbon Filter, 3- or 4-Inch Connection - Image 2](https://m.media-amazon.com/images/I/71ICFQLP9eL.jpg)
![Studor 20297 Maxi-Filtra Septic Tank Drain Vent Two-Way Active Carbon Filter, 3- or 4-Inch Connection - Image 3](https://m.media-amazon.com/images/I/81LLcqq5ryL.jpg)

## Questions & Answers

**Q: We have two holes in our old concrete septic tank for vents. Will this product be the best for both? Do we need an air admittance valve either/ or?**
A: Provided the two holes are at the top of the septic tank and they will accommodate a pipe of a diameter specified in the product description, you should not have any problem fitting the product to one or both of the vent holes. As the Studor Maxi-Filtra is a two way vent I cannot see the need for an air admittance valve. Hope this helps.

**Q: Could this be fitted horizontally, onto an existing, rectangular opening vertical pipe I wonder...?**
A: I don't think it would as the unit is a round fitting.  I don't know how you could make a tight seal all around it and your existing rectangular pipe

**Q: Would this work on a cesspit vent pipe?**
A: Yes I think it should. We fitted ours to a vent pipe on the patio with the tanks beneath and works great!

**Q: Does this include the fittings for attachment to 100mm Vent pipe. The brochure on their website shows that fitting is possible, but is it included?**
A: The Studor Maxi Filtra will fit 75mm, 90mm and 110mm dia pipe, fitting is included.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Installed after a new tank install was a bit smelly
*by C***G on 30 April 2024*

Had a new tank and soak away install but have been getting an eggy smell the closer to the vent you were, had the tank inspected and it is working fine so the smell was nothing to worry about in that regard but it was off putting when in the garden, after installing this to the top of the vent the smell has gone and has not yet returned - took 5 mins to install and the results were immediate, would definitely recommend if anyone has similar vent smell - do get it checked before hand though as smells can be in indicator of potential issue 👍

### ⭐⭐⭐⭐⭐ It worked
*by D***B on 3 April 2025*

Seems to work. Replaced old unit with this and smell disappeared.

### ⭐⭐⭐⭐⭐ Simple fix.
*by A***R on 23 May 2020*

It simply works, had all sorts of experts reviewing the treatment plant all suggesting expensive fixes, £40 later it no longer smells. I noticed on a previous poor rating commented by one person he said it allowed the smell back into his house? We had our house plumbed in incorrectly and they fitted dergoes inside. We had to have them all taken out due too letting the odours into the bathrooms, major problem. This may of been his problem as well. Hope this helps him. Great product and a cheap fix. Would strongly recommend

## Frequently Bought Together

- Studor 20297 Maxi-Filtra Septic Tank Drain Vent Two-Way Active Carbon Filter, 3- or 4-Inch Connection
- Studor 20700 Maxi-Filtra ABS Air Admittance Valve Replacement Cartridge, Yellow/Black
- Studor 20398 Maxi-Cap for Maxi-Vent

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-14*