Ruck 8" Back Draught Damper for Ducting Mercury Filter The trellis netting has 3

The trellis netting has 3

True Solar Symmetry Design: Engineered by photo-biologists and gas chemists for spectral balance that mimics natural sunlight more accurately than standard HID lamps

An ideal balance between small and large pores in the stone wool of the plug ensures an optimum air-to-water ratio

At eighth-size volumes that is almost always the right trade

labeled for use in organic production

Ruck 8" Back Draught Damper for Ducting Mercury Filter The trellis netting has 3Back 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