Home > Products > Airflow Control > Non Return Dampers > SG 661

SG 661

Duct mounted non return dampers (NRD).

Designed for use in fresh air intake or air exhaust openings, with twin fans in commercial and residential premises. NRD prevent the reverse airflow and protect against the ingress of untempered air, rain and birds into the HVAC system.

100

Years
Since 1925

22

Subsidiaries
catering to 60 countries

19

Hundred
employees working

393

Million euros
turnover