Lindab DTMU tight shut-off damper in galvanised steel, with a 160 mm circular connection and 135 mm height. The damper achieves leakage class 4 when closed and is used to isolate branches of a ventilation duct network. Reported carbon footprint is 4.4224 kg CO2e per unit. Supplied under manufacturer part number 100378, EAN 7319661003781, HS code 7307.99, country of origin Denmark.