Use the the ONA Air Filter to purify your gardens air exhaust with the scented ONA Block Fragrance of your choice.
Simply attach the ONA Air Filter to your ventilation system, insert ONA Blocks, shut the easy to close lid. All unwanted odours from your garden will removed when passing through the air filter dispenser - effectively and quickly.
ONA Air Filter How It Works
|Size||100mm, 125mm, 150mm, 200mm, 250mm, 315mm|