Standard made in galvanized steel, inox or aluminium on request.
External insulation with heat-insulating adhesive polyethylene on first class of fire reaction (DM 26/06/1984).
Maximum operating temperature: 70°C.
PDE series plenum are installed on panel diffusers. The purpose of the plenum, or calm box, is deleting or reducing the irregularities of the air speed profile, which comes from the supply line. Because of this, the launch characteristics will comply those provided.