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Inside gradation to verify water level
Exhaust fans with high CFM ratings can create too much negative air pressure that the canvas walls flex inward
It has simultaneous dual timer functions
Compatible with all nutrient lines
No trigger
Active Air-Air Duct Non Insulated growing-accessories Inside gradation to verify waterRely on Active Air non insulated air ducting with your reflectors, exhaust systems, and other systems. Features Durable construction for lasting performance Dual layer thickness 2 stainless steel clamps included 25' of ducting Can withstand temperatures of 4F to 175F AS 4254 1995 fire rating
