Spring Loaded Backdraft Damper 4" mycorrhiza General Hydroponics Flora Grow (2-1-6)

General Hydroponics Flora Grow (2-1-6) stimulates structural and vegetative growth by providing nitrogen

E3: Short-circuit for temperature sensor (probe)

The Pro version is the flagship range of Mammoth grow tents

Covering for large materials outside for weather protection

Spring Loaded Backdraft Damper 4" mycorrhiza General Hydroponics Flora Grow (2-1-6)Neoprene damper seal minimizes leakage 20 gauge steel housing, aluminum spring loaded butterfly damper blades Gasket designed to withstand temperatures from 22 F to 180 F Requires from 0. 04 to 0. 08 in. wg pressure to open Simple installation in any position entire assembly inserts into duct Exterior foam gasket assures a tight seal against duct