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HK carbon filters

Choose an HK carbon filter for odour control in your grow tent or grow room extraction system. Our Heavy carbo range includes the HK50 and HK100. We can help you match the filter, extractor and ducting. Check airflow capacity, connections and installation space before ordering.

2 products

Match the filter to your extractor

A carbon filter helps reduce odours in extracted air. The filter treats the air passing through it; the extractor moves that air. Choose them as a system. A circulation fan inside the tent does not replace extraction.

Start with the type and required airflow of your inline fan or box fan, then check which filter suits that airflow. The filter and ductwork add resistance, so assess the fan with the connected system in mind. Its maximum free-air rating alone is not enough to choose a filter.

Plan the duct route and seal the connections

Record the connection sizes of the filter, extractor and ventilation ducting. Check both the diameter and how the parts slide over or into each other. Keep the route straightforward and avoid sharp bends or compressed ducting.

Support the filter and extractor separately. Use a suitable duct clamp and appropriate sealing material for the joint. A clamp cannot correct a mismatched connection. Our guide to fitting clamps and seals explains how to finish the joint carefully.

HK50 or HK100: three checks before you choose

This range has two models: Heavy carbo HK50 and Heavy carbo HK100. Use the model name to identify the version you need. Do not infer airflow capacity or connection size from the number in the name.

  • Airflow: match the filter’s permitted airflow to your extractor and operating setting.
  • Connection: check the flange, duct diameter and the fittings supplied with that version.
  • Space: allow room for the filter, its mounting and ducting without a tight bend.

Send us the fan model, connection size and a photo or sketch of the layout. We can help you confirm a suitable filter and any ventilation flanges before ordering. Browse all our grow tent carbon filters to consider other options.

Original product photos of Heavy carbo HK50 and HK100 carbon filters

HK carbon filter questions

Which HK filter suits your extractor?

Tell us your fan model, connection size and available space. We can help you match the filter to your extraction system.

  • Your extractor model and operating setting

  • The connection size and a photo of the joint

  • The space available for the filter and ducting

Contact us

Advice on ventilation connections

All duct fitting guides

Complete your extraction system