Ruck 8" Back Draught Damper for Ducting OHP 3-1-2 N-P-K Ratio: proven ratio

3-1-2 N-P-K Ratio: proven ratio for vigorous vegetative growth

because the air needs time to settle

Futurola Knockbox 1 base The Futurola Knockbox 100 Base is engineered to transform your pre-roll preparation into a seamless

Geoflora VEG works best with Peat or Coconut Fiber based growing media and soils

Ruck 8" Back Draught Damper for Ducting OHP 3-1-2 N-P-K Ratio: proven ratioBack Draught Shutter for 8" Duct Systems The Ruck 8" Back Draught Damper is an essential component for maintaining efficient airflow in ventilation systems. Built with a durable galvanized sheet steel housing, it prevents reverse airflow by automatically sealing off when the fan is off. The spring loaded aluminum flaps respond to active airflow and remain closed when idle, assisted by a secure rubber seal. This back draught shutter is suitable for