Airbox Refill Cartridge 4 Filter Size:Airbox Refill Cartridge 4 Plus air blows towards the floor

air blows towards the floor to provide blanket-style airing

Irrigation systems regularly maintained with Wet HOCL will last longer and run more optimally throughout

some of the nutrients will precipitate

feature packed vertical grow light for indoor horticulture

Airbox Refill Cartridge 4 Filter Size:Airbox Refill Cartridge 4 Plus air blows towards the floorRefill 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)