Ruck 14'' Intake Filter Box with MERV 5 Mat Filter pH Adjusters 2g per joint at a

2g per joint at a 5-10% weight variance

Duct Opening Size: 6 inches

or 500ml of Roots

They can be used for raised bed gardens or as tray liners for hydroponics systems

Bluelab's EC/CF equipment does not need calibrating

Ruck 14'' Intake Filter Box with MERV 5 Mat Filter pH Adjusters 2g per joint at aRuck 14" Intake Filter Box for Efficient Airflow Filtration Designed for optimal performance, the Ruck 14" Intake Filter Box is made from durable galvanized sheet steel that ensures minimal airflow restriction. This intake box includes an ISO Coarse 45% MERV 5 rated fiber mat filter, providing effective low intensity exhaust filtration. Its toggle type fastener allows for quick and secure access during filter changes. Ideal for use in grow rooms and