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The 500mm 20 in Cover with Integrated Activated Carbon Filter from Polylok is a premium solution for controlling unpleasant odours from septic tanks, wastewater treatment systems, pump chambers and inspection chambers. Combining a heavy-duty access cover with an integrated activated carbon filter, this innovative product captures and neutralises odour-causing gases before they are released into the atmosphere, creating a cleaner and more pleasant environment around your property.
Manufactured from high-quality high-density polyethylene HDPE, the 500mm 20 in Cover with Integrated Activated Carbon Filter is built to provide exceptional strength, durability and long-term performance. Unlike traditional metal covers, it will not rust or corrode and incorporates the highest UV protection available, helping prevent fading, cracking and deterioration caused by prolonged exposure to sunlight. This ensures years of reliable performance, even in demanding outdoor environments.
Inside the cover is 900 g 2 lb of premium activated carbon, designed to absorb hydrogen sulphide and other offensive gases commonly produced by septic tanks and wastewater systems. The carbon is contained within Polylok’s specially engineered filter bag, allowing maximum airflow while ensuring effective odour filtration. When the carbon reaches the end of its service life, it can be replaced easily using a genuine Polylok replacement carbon bag, extending the life of the cover without replacing the complete unit.
Designed to fit 500mm 20 in Polylok risers and 500mm 20 in corrugated twin-wall pipe, the cover is suitable for new installations and retrofit projects alike. Its secure six-screw locking system helps prevent unauthorised access while keeping the cover firmly in place, providing additional safety for residential and commercial applications. The cover is also pedestrian rated, making it ideal for gardens, landscaped areas and other locations where regular foot traffic is expected.
Finished in Polylok’s signature green colour, the cover blends naturally into lawns and landscaped surroundings, providing discreet access without compromising the appearance of the area. Trusted by installers and wastewater professionals throughout Europe, the 500mm 20 in Cover with Integrated Activated Carbon Filter delivers Polylok’s renowned quality, effective odour control and long-lasting performance, making it the ideal choice for maintaining safe, attractive and odour-free wastewater systems.
