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Studor 20297 Maxi-Filtra Septic Tank Drain Vent Two-Way Active Carbon Filter

£69.99

(exc VAT)

£69.99

(exc VAT)

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The Studor 20297 Maxi-Filtra is a high-performance active carbon vent filter designed to eliminate unpleasant odours from drainage systems, septic tanks, and wastewater installations. Engineered for outdoor use, this robust odour control vent provides effective filtration of foul-smelling gases while maintaining essential airflow within the drainage system.

Suitable for both 3-inch and 4-inch pipe connections, the Maxi-Filtra can be installed vertically or horizontally, making it ideal for new installations and retrofit applications where drainage odours are causing a nuisance.

The integrated activated carbon filter operates as a two-way vent, allowing air to flow freely in both directions while absorbing and neutralising unwanted odours. Its weather-resistant construction ensures reliable long-term performance in external environments.

For optimum performance, the carbon filter cartridge should be replaced at least every two years.

 

Ideal Applications

The Studor Maxi-Filtra is suitable for a wide range of drainage and wastewater systems, including:

  • Septic tanks
  • Grease separators
  • Rainwater harvesting tanks
  • Sewage treatment plants
  • Domestic and commercial drainage systems
  • External soil vent pipe installations

 

Key Features & Benefits

  • Effectively eliminates unpleasant drainage and septic tank odours
  • High-quality activated carbon filtration technology
  • Two-way vent design for unrestricted airflow and odour control
  • Suitable for 3" and 4" drainage pipe connections
  • Ideal for septic tanks, sewage treatment plants, and wastewater systems
  • Easy retrofit solution for existing odour problems
  • Simple push-fit connection compatible with standard UK soil pipe systems
  • Durable weather-resistant housing for outdoor installation
  • Can be installed vertically or horizontally
  • Resistant to extreme temperatures and environmental deterioration
  • Helps reduce the need for costly septic tank odour-control additives
  • Supplied with a replaceable carbon filter cartridge

 

Easy Maintenance

The Studor Maxi-Filtra has been designed for minimal maintenance. The top cap can be easily removed, allowing quick and straightforward replacement of the activated carbon cartridge.

Recommended maintenance: Replace the carbon filter cartridge at least every two years to ensure maximum odour absorption and continued system performance.


Why Choose the Studor Maxi-Filtra?

The Studor Maxi-Filtra provides a simple, cost-effective solution for controlling drainage and septic tank odours without the need for chemical additives. Its durable construction, flexible installation options, and advanced activated carbon filtration make it the ideal choice for maintaining a cleaner, fresher outdoor environment around drainage and wastewater systems.

 

 Maxi Filtra Installation Instructions
Specification Sheet

SKU: SPAFILTSTU002

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CUSTOMER REVIEWS

Rated 4.8/5 by Direct Drainage Customers

Based on over 600 verified reviews

VERIFIED REVIEW

Very helpful from the start to the finish

Items were despatched quickly and arrived the next day. Would recommend.

Title

North Hayne Farm Cottages | 26 June 2026

VERIFIED REVIEW

Cheapest price I could find for the pump

Cheapest price I could find for the pump and delivery the next day what more could you want.

Title

Sam Jukes | 5 November 2025

VERIFIED REVIEW

Great service!

I ordered a septic tank it was delivered within a week and the delivery driver left it in the exact right place and time. Would definitely use this company again, thanks so much.

Title

Eve Harland | December 2025

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FAQs

Got questions? We’ve got the answer...

When will my order be dispatched?

Spare Parts Shipping
We ship in-stock spare parts the same day if ordered before 3pm. These orders are sent with DPD as standard and will be shipped on a Tracked Next-Day service.


Tanks & Supplier-Shipped Items

Tanks and certain spare parts are shipped directly from our suppliers. We aim to submit supplier orders to the supplier on the same day your order is placed to ensure prompt processing. 

How much is delivery?

Delivery costs vary depending on the type of product:

 

In-stock Spare Parts: £8.20 - shipped via DPD on a Tracked Next-Day service.
Supplier-shipped Spare Parts: £15 - dispatched directly from the supplier.
Tanks and Sewage Treatment Systems: Free Delivery to most mainland UK postcodes.

 

All delivery charges are calculated accurately at checkout.

I need help with placing my order.

No problem! Here are a few ways we can assist you:

Live Chat: Click the chat icon on the bottom right of the page to speak with our team instantly.
Call Us: Reach us at 01388 537050 during business hours for quick support.
Email: Send your query to sales@direct-drainage.co.uk, and we’ll respond promptly.

Do you stock all tanks and sewage treatment systems?

We do not stock tanks and treatment systems as standard. These are supplied directly from the manufacturer. The lead times of these systems will vary. If you need an accurate delivery date, please contact us on 01388 537050.

Are your prices inclusive of VAT?

It is important to note that all prices listed on our website exclude VAT. VAT will be calculated at checkout. 

I've found the same item somewhere cheaper, can you match the price?

We always aim to offer competitive pricing. If you've found the same item cheaper elsewhere, let us know — we'll do everything we can to match or even beat the price.

 

Contact us directly on 01388 537050 or drop us an email at sales@direct-drainage.co.uk.