RFSM – Regulating valve square manual is designed for continuous regulation of volume airflow in the environment protected against weather conditions, especially dust and humidity.
ORDER SAMPLE:

RFSM (T) A x B X pcs ( – / T * classic / tight)

ORDER EXAMPLE:

RFSM 600 x 450 Zn 1 pcs

Ordering example of a manual regulation valve, A=600 mm, B=450 mm, made of galvanized material