PolyAir 4in (110mm) Activated Carbon Filter provides an effective, low-maintenance solution to eliminate unpleasant odours from septic tanks, wastewater treatment systems, and sewer vent pipes.
Using advanced activated carbon filtration, this durable vent filter neutralises offensive gases such as hydrogen sulphide (H₂S) before they escape into the air, helping you maintain a clean, fresh-smelling environment.
Ideal for domestic, commercial, or agricultural use, the PolyAir 4in (110mm) Activated Carbon Filter is easy to install, cost-effective, and fits standard vent pipe sizes for quick setup and reliable performance.
Removes unpleasant odours – eliminates foul smells such as hydrogen sulphide from vented wastewater systems
Easy to install – fits standard 4″ (110mm) vent pipes; no specialist tools required
Easy to replace – simple cartridge design allows quick carbon replacement
Cost-effective – long-lasting performance and affordable maintenance
Two available sizes:
4″ (PCF-PLVF-4) – uses 450 g (1 lb) of activated carbon pellets
6″ (PCF-PLVF-6) – uses 2.3 kg (5 lb) of activated carbon pellets
No more offensive odours – ideal for homes, gardens, and outdoor areas
Enjoy your outdoor spaces – no more spoiled patio parties or foul air near windows
Perfect for properties with roof windows – prevents sewer gases drifting inside
Keep your surroundings clean and odour-free with the PolyAir 4in (110mm) Activated Carbon Filter, the trusted odour-control solution across the UK and the EU.
Click here to check out the PolyAir 4in (110mm) Activated Carbon Vent Filter – ideal for commercial applications!
Please Note: Polylok stocks replacement bags of activated carbon pellets for both the 4in (110mm) and 6″ (160mm) vent filters. Call Polylok on +353 5986 31524 or email [email protected] for pricing and availability.

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