Linear heavy type grille for floor installation made by anodized aluminium. For supply or extract air. The blades are fixed and the air jet is vertical to the grille face. Electrostatic paint in RAL color is possible. The blades are parallel to the first mentioned dimension. Also is available in the following executions:

• ΒΤ-D: With aluminium made, multiple leaf, air volume control damper with simultaneously opposite rotated blades.