Product_Leaftet_The Velco_ventilator
Support - The Velco ventilator - English.pdf
With a spacer you are always sure to have a minimum airflow. Spacers are available in two sizes 2 and 4 mm Pls note that a 4 mm spacer means a 2mm air gap A 4 mm spacer plus a 2mm spacer means a 4 mm air gap.