---
product_id: 19712591
title: "20297 Maxi-Filtra Septic Tank Drain Vent Two-Way Active Carbon Filter, 3- or 4-Inch Connection"
brand: "studor"
price: "VT24757"
currency: VUV
in_stock: true
category: "Studor"
url: https://www.desertcart.vu/products/19712591-20297-maxi-filtra-septic-tank-drain-vent-two-way-active
store_origin: VU
region: Vanuatu
---

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

**Brand:** studor
**Price:** VT24757
**Availability:** ✅ In Stock

## Summary

> 🌿 Breathe Easy, Live Fresh — The Ultimate Septic Vent Upgrade

## Quick Answers

- **What is this?** 20297 Maxi-Filtra Septic Tank Drain Vent Two-Way Active Carbon Filter, 3- or 4-Inch Connection by studor
- **How much does it cost?** VT24757 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/19712591-20297-maxi-filtra-septic-tank-drain-vent-two-way-active)

## 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

- • **Durable & Discreet Design:** Compact ABS construction fits vertically or horizontally in tight spots, blending into your outdoor setup effortlessly.
- • **Universal Fit, Zero Hassle:** Designed for 3- or 4-inch piping with easy slip connections—retrofit your existing system without specialist help.
- • **Dual-Direction Venting Power:** Two-way venting filters air both ways, ensuring no foul smells escape while maintaining system pressure balance.
- • **Seamless Septic Odor Defense:** Active carbon filter traps and neutralizes sewer gases, keeping your outdoor spaces fresh and inviting.
- • **Eco-Friendly & Cost-Effective:** Replaceable filter lasts up to 2 years, reducing maintenance frequency and avoiding costly roof vent installations.

## Overview

The Studor 20297 Maxi-Filtra is a robust two-way active carbon vent filter designed for 3- or 4-inch septic and drainage systems. It eliminates unpleasant odors by filtering sewer gases before they escape, using a replaceable carbon filter with up to 2 years of life. Its versatile ABS construction allows installation in tight or hard-to-reach outdoor locations without specialist tools, making it ideal for retrofitting existing plumbing or new builds. This vent supports system pressure equalization while preventing odor pollution, enhancing backyard enjoyment and compliance with building regulations.

## 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.

## 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 | #150,000 in Health & Household ( See Top 100 in Health & Household ) #90 in Septic Tank Treatments |
| Brand Name | Studor |
| Connector Type | Slip |
| Customer Reviews | 4.4 4.4 out of 5 stars (466) |
| Exterior Finish | Rubber |
| Global Trade Identification Number | 00764651202977 |
| Included Components | Instructional guide included |
| Inlet Connection Size | 3.5 Inches |
| Inlet Connection Type | Slip |
| Item Dimensions | 3.5 x 3.5 x 6 inches |
| Item Weight | 0.01 Ounces |
| Manufacturer | IPS Corporation |
| Manufacturer Part Number | 20297 |
| Material Type | Acrylonitrile Butadiene Styrene, Rubber |
| Model Number | 20297 |
| Number of Ports | 1 |
| Outlet Connection Size | 3.5 Inches |
| Outlet Connection Type | NPT |
| Set Name | 3-inch and 4-inch |
| Size | 3-inch, 4-inch |
| Thread Size | 1.5 inches |
| Thread Type | NPT, None |
| 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:** 3.5 x 3.5 x 6 inches
- **Material:** Acrylonitrile Butadiene Styrene, Rubber
- **Number of Packs:** 1
- **Number of Ports:** 1
- **Outlet Connection Size:** 3.5 Inches
- **Outlet Connection Type:** NPT

## Images

![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)
![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)
![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"

## 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 Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-03*