Backdraft Damper, 6" Commercial Dehumidifier data-hold function and low battery

data-hold function and low battery indicator with large and easy-to-read LCD screen includes simultaneous temperature reading

The high CFM (Cubic Feet Per Minute) kit is to help prevent your indoor grow tent walls from sucking in due to high amounts of negative pressure from exhaust systems

perfectly balanced for superior blooms and bountiful harvests

These Active Aqua float valves are made with NSF-approved PVCD and 18-8 stainless steel hardware

green cloverworm

Backdraft Damper, 6" Commercial Dehumidifier data-hold function and low batteryMade of galvanized steel, these dampers prevent air leakage into your fan setup. They are easy to install, fit directly onto the ducting, and prevent a backdraft of air when the fans are switched off.