Ruck 16" Back Draught Damper for Ducting 17MM Hardware slow or uncalibratable readings usually

slow or uncalibratable readings usually mean the probe rather than the meter

Weeks one and two do not need it

and sound an alarm (both visible and audible) in the event of the CO2 level going above normal or safe levels

U-Turn Wiring: Folds a row back on itself for two-row layouts on one bench

Ruck 16" Back Draught Damper for Ducting 17MM Hardware slow or uncalibratable readings usuallyBack Draught Shutter for 16" Duct Systems The Ruck 16" 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