is a rectangular diffuser for installation in a wall or skirting board with perforated front plate in various designs (see summary). The diffuser is suitable for the horizontal supply of cooled air and exhaust. The diffuser for supply air is used with a WB type plenum box, and for air exhaust, with a VBA type plenum box. The plenum boxes are equipped with a damper and measuring device, enabling individual adjustment. For more information, please contact This email address is being protected from spambots. You need JavaScript enabled to view it.