Just Add ONA Blocks for Continuous Air Freshness.

ONA Air Filters allow for the complete and continuous air filtration of your indoor gardens air exhaust.

Just attach to your ventilation system, insert the desired number of ONA blocks, and any unwanted odours will be removed from your ducting, quickly, effectively and permanently.

ONA air filters will provide continuous neutralisation of your ventilations odours until the ONA blocks are exhausted. Once the blocks have been fully consumed the lid can be opened and the blocks replenished.

Compatible with ONA BLOCK 170 gr.