Ona Odour Control Ducts 4" 100mm
- Brand New Ona Odour Control Ducts gives the ultimate in growers peace of mind.
- Used in conjunction with Ona blocks for the neutralisation of unwanted odours in your ducting.
- Instructions for Use: Open catches on ducting lid, open lid, insert desired quantity of Ona blocks and reseal to neutralise odours in your ducting.
- Once the Ona blocks are exhausted simply re-open discard and replace.