ONA Air Filter

Allows 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 (or alternative) blocks, and any unwanted odours will be removed from your ducting, quickly effectively and permanently.

Available in a number of different diameters to cater for your hydroponics set up: 4, 5, 6, 8, 10 & 12 inch ducts.