Airbox 1-2-3 Refill Cartridge
Price: $62.90 CAD
Refill cartridge for Air Box 1-2-3. 12" x 20" x 1"
The Airbox has a replaceable charcoal filter system making it a great buy . You don't have to replace the entire unit , just replace the cartridges.
Easy and cheap and good for the environment .