Transfer grilles with a mesh AL-SI2/ST-SI2

A rectangular transfer ventilation grille made of aluminium or steel, with a mesh, covering compensation holes.

The AL-SI2(1) and ST-SI2(1) grilles are designed for ventilation installations as transfer (compensation) hole covers. They provide a large (net) surface area of free passage.

AL-SI2 and AL-SI21 aluminium grilles
The AL-SI2 and AL-SI21 grilles are equipped with frames and a covering mesh made of aluminium anodised to a natural colour. The whole product may be painted in RAL9010 white. Other RAL colours are available upon request. The AL-SI21 type is additionally equipped with a counterframe (with a mesh) that allows two-sided masking of the compensation hole.

ST-SI2 and ST-SI21 steel grilles
The ST-SI2 and ST-SI21 grilles are equipped with frames and a covering mesh made of steel painted in RAL9010 white. Other RAL colour painting and galvanized or stainless steel versions are available upon request. The ST-SI21 type is additionally equipped with a counterframe (with a mesh) that allows two-sided masking of the compensation hole.