Fan extension kit Retrofit kit for active cooling, consisting of: AC fan 230 V/50 Hz - precision ball bearings for long service life and smooth running Air volume 162 cbm/h, 37db(A) - Type A with thermostat Connection cable length 915 mm with wire end ferrule Permissible operating temperature -40 to +60°C Approval: UL - CSA - VDE Metal protective grille, earthing set and fastening material.