Air Box 4+ Plus Refill Carbon Filter Replacement PowerSi use fertigation sleeves filled with

use fertigation sleeves filled with Hydroponic Perlite

Gently warms soil for faster germination and better growth

000 gallons with just a 1L bottle

Flange: Built in 4"

940 stonewool plugs at 1

Air Box 4+ Plus Refill Carbon Filter Replacement PowerSi use fertigation sleeves filled withSpecial Order Note: Returns for Air Boxes not used are 14 days from the time of delivery. There is a 30% restocking fee and must pay for return shipping. This is the Air Box manufacturers return policy. Refill cartridge for Air Box 4+ Plus. Single Filter. This refill cartridge size is suitable for Airbox 4+. Air Box filters usually last 18 24 months but may vary depending on temperature, moisture and other environmental conditions. (IMPORTANT: Order 1