These are the only approved louvre cross sections for the Westair Console Range
The above two louver profiles must be followed to get the ultimate performance out of any WESTAIR Console Unit from a WC 9 to WC 24 with the least operating costs and longest life span ot the unit.
NB: It is also very important to keep the above louver profiles and clear opening of minimum 5 mm of louvre veins for any warrnty claims etc.