Airbox Refill Cartridge 4 Filter Size:Airbox Refill Cartridge 4 Plus 2 Combo Duffel you’ll have

2 Combo Duffel you’ll have plenty of storage space with all the benefits of a true carbon lined bag and carbon lined insert

feature packed vertical grow light for indoor horticulture

some of the nutrients will precipitate

air blows towards the floor to provide blanket-style airing

The Under Current utilizes negative water pressure to recirculate oxygenated nutrient solution through the plant's root zone ensuring pH and EC levels are uniform throughout the entire system

Airbox Refill Cartridge 4 Filter Size:Airbox Refill Cartridge 4 Plus 2 Combo Duffel you’ll haveRefill cartridge for Air Box Air Filter Stealth 1 2 3 4 4+, fits these three models. Single Filter. This refill cartridge size is suitable for Airbox 1, Airbox 2 and Airbox 3, Airbox 4, and Airbox 4+. (IMPORTANT: Order 1 OR 2 OR 3 OR 4 OR 4 Plus cartridges as required for your Air Box unit)