The air intake / exhaust vents are square frames fitted with
fixed-angle louvres and a wire mesh made of a 1 mm thick
wire and mesh opening size of 12.7x12.7 mm. The vents can
be installed in walls or at the ends of ventilation ducts.
The product is made from galvanized steel sheet.
The powder-coated finish in any RAL colour is available on
request.
The product is provided with the PZH-NIH Hygiene Certificate
no. HK/B/1652/01/2007.