Ruck 4" Back Draught Damper for Ducting Micro Nutrients this product ships freight

this product ships freight

only to the temperature and humidity at which the reading is being taken from

limiting heat transfer in cooler months

Add-Ons – Parts Kit

weighing only 1 lb and measuring 6 × 6 × 2 inches (L × W × H)

Ruck 4" Back Draught Damper for Ducting Micro Nutrients this product ships freightBack Draught Shutter for 4" Duct Systems The Ruck 4" 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