THE GLOBAL INDUSTRIAL CEILING DUCT KIT IS COMPATIBLE WITH THE GLOBAL INDUSTRIAL PORTABLE AIR CONDITIONER WITH COLD AIR NOZZLES MODEL NUMBER 292846. THIS CEILING DUCT KIT INCLUDES ONE 8' L X 20"" DIAMETER AIR DUCT CEILING ADAPTER PLATE AND CLAMPS. IT ALLOWS PORTABLE AIR CONDITIONERS TO SEND EXHAUST THROUGH A DROP CEILING SPACE WHILE ALSO PROVIDING SUPERIOR VENTILATION AND AS WELL AS A COOLING SOURCE.