---
product_id: 19712591
title: "Studor 20297 Maxi-Filtra Septic Tank Drain Vent Two-Way Active Carbon Filter, 3- or 4-Inch Connection"
brand: "studor"
price: "€ 121.00"
currency: EUR
in_stock: true
reviews_count: 13
category: "Studor"
url: https://www.desertcart.nl/products/19712591-studor-20297-maxi-filtra-septic-tank-drain-vent-two-way
store_origin: NL
region: Netherlands
---

# Replaceable active carbon filter (2-year life) Two-way vent for odor elimination Fits 3- or 4-inch pipes Studor 20297 Maxi-Filtra Septic Tank Drain Vent Two-Way Active Carbon Filter, 3- or 4-Inch Connection

**Brand:** studor
**Price:** € 121.00
**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?** € 121.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/19712591-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 to meet modern odor control standards without costly renovations.
- • **Dual-Direction Defense:** Two-way venting filters air both ways, keeping your space odor-free inside and out.
- • **Seamless Septic Freshness:** Eliminates sewer gases and odors for a backyard you’ll actually want to enjoy.
- • **Universal Fit, Zero Hassle:** Compatible with 3- or 4-inch piping and installs easily without specialists.
- • **Eco-Friendly Replaceable Filter:** Active carbon filter lasts up to 2 years and is simple to swap, reducing waste and maintenance stress.

## Overview

The Studor 20297 Maxi-Filtra is a robust, two-way active carbon vent filter designed for 3- or 4-inch septic tank and lift station pipes. It effectively eliminates unpleasant sewer odors by filtering air in both directions, with a replaceable carbon filter lasting up to two years. Easy to install externally without specialist help, it fits existing plumbing systems and enhances outdoor air quality, making it a must-have for odor control in residential and commercial drainage setups.

## Description

Product Description The Studor Maxi-Filtra is a robust two-way vent that eliminates bad odors with a sturdy filter designed specifically for outdoor drainage applications. It contains a replaceable active carbon filter that operates as a two-way vent, filtering air in both directions. Its robust design means the Maxi-Filtra can be used vertically or horizontally and can be installed in hard-to-reach places. For use externally, it operates as a 2-way vent, filtering air in both directions. Particularly for use with septic tanks, the Maxi-Filtra may also be installed on open vents already existing or for new buildings where regulations insist on their inclusion within the building's drainage system. For best results, the Studor Maxi-Filtra should be installed with Studor Air Admittance Valves (AAVs). Fits 3- or 4-inch connections. Dimensions: 5.25-inch vent height x 4.875-inch vent diameter. ABS construction. Includes 4-inch rubber gasket. From the Manufacturer Allow air to enter DWV systems to equalize pressure when water drains out of the system; eliminate the need for costly roof penetrations and vent piping. No. 1ATD5 vents up to 500 DFUs on a stack; No. 1ATD6 vents up to 160 DFUs on a branch and up to 24 DFUs on a stack. No. 15W940 has a replaceable cabon filter to reduce plumbing drainage system odors.

Review: Brings back Backyard enjoyment! - The vent pipe from our sewer system often ruined our back yard experience. Once this filter was installed, no more stinky smells! With the removal of the rubber section on the bottom, this was a perfect fit for our septic vent pipe and was easy to install. Works perfectly!
Review: Holding tank- odor eliminator vent - It was fine and easy. We are fairly mechanical inclined. So no problems there. Does it’s job. But those not so adept could use directions either on or in the box.

## 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 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #182,097 in Health & Household ( See Top 100 in Health & Household ) #103 in Septic Tank Treatments |
| Brand | Studor |
| Customer Reviews | 4.4 4.4 out of 5 stars (459) |
| Date First Available | May 5, 2012 |
| Exterior Finish | Rubber |
| Global Trade Identification Number | 00764651202977 |
| Included Components | Instructional guide included |
| Inlet Connection Size | 3.5 Inches |
| Inlet Connection Type | Slip |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.01 ounces |
| Item dimensions L x W x H | 3.5 x 3.5 x 6 inches |
| Item model number | 20297 |
| Manufacturer | IPS Corporation |
| Material | Acrylonitrile Butadiene Styrene, Rubber |
| Measurement System | inch |
| Number of Ports | 1 |
| Outlet Connection Size | 3.5 Inches |
| Outlet Connection Type | NPT |
| Part Number | 20297 |
| Product Dimensions | 3.5 x 3.5 x 6 inches |
| Size | 3-inch, 4-inch |
| UPC | 764651202977 |

## Product Details

- **Brand:** Studor
- **Exterior Finish:** Rubber
- **Global Trade Identification Number:** 00764651202977
- **Inlet Connection Size:** 3.5 Inches
- **Inlet Connection Type:** Slip
- **Item dimensions L x W x H:** 3.5 x 3.5 x 6 inches
- **Material:** Acrylonitrile Butadiene Styrene, Rubber
- **Number of Ports:** 1
- **Outlet Connection Size:** 3.5 Inches
- **Outlet Connection Type:** NPT

## 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: can it be mounted outside upside down?**
A: I believe this would allow water to sit inside it and affect it's capability to work properly. Also, if you live in a cold climate then it could freeze.

**Q: Is this an actual air admittance valve, or simply a charcoal filter?**
A: It's both a vent and a filter. I use it to keep rain and snow out of the venting system. The air comes out the bottom of the cap. Works fine for me.

**Q: Does this include the filter cartridge? Thanks**
A: Yes - it includes the filter.

**Q: Is it a 2’’ Studor vent?**
A: No, 4"

## Customer Reviews

### ⭐⭐⭐⭐⭐ Brings back Backyard enjoyment!
*by N***E on June 25, 2025*

The vent pipe from our sewer system often ruined our back yard experience. Once this filter was installed, no more stinky smells! With the removal of the rubber section on the bottom, this was a perfect fit for our septic vent pipe and was easy to install. Works perfectly!

### ⭐⭐⭐⭐ Holding tank- odor eliminator vent
*by L***A on May 27, 2024*

It was fine and easy. We are fairly mechanical inclined. So no problems there. Does it’s job. But those not so adept could use directions either on or in the box.

### ⭐⭐⭐⭐⭐ No more smell
*by J***E on October 13, 2025*

Simple and effective. We had a recurring smell in the yard that we could not figure out. The septic system was new and the smell was a mystery. After searching online I came across this and decided to try it out. The smell was gone immediately.

## 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

---

## 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.nl/products/19712591-studor-20297-maxi-filtra-septic-tank-drain-vent-two-way](https://www.desertcart.nl/products/19712591-studor-20297-maxi-filtra-septic-tank-drain-vent-two-way)

---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-23*