Air distribution boxes are made from galvanized steel, inside covered with synthetic rubber. Boxes are used to distribute air from air handling unit to 75 mm or 90 mm flexible ducts. Boxes are assembled with perforated panel inside to ensure equal air flow. D – connection diameter. Where flexible ducts and other components are connected, it is highly recommended to use sealing rings.
Main air supply/exhaust duct is connected to air distribution box horizontally. Boxes are assembled with plastic PAT-75 connections. On demand PAT-75 can be changed to PAT-90.