AL-STS
The grille frames are made of aluminium anodised to natural colour or painted with RAL9010 paint. They can also be coated to order with other RAL colours. The covering surface is made
of aluminium mesh with 56% clearance. It can be also made of galvanised steel mesh screen with 58% clearance (round mesh) or with 51% clearance (square mesh).
ST-STS
The grille frame is made of coated steel, painted with RAL9010 white paint. Other RAL colour painting and galvanised or stainless steel versions are available to special order. Covering surface is made of galvanised steel mesh with 56% clearance. It can be also made of galvanised or stainless steel mesh screen with 58% clearance (round mesh) or with 51% clearance (square mesh).