THE GLOBAL INDUSTRIAL CEILING DUCT KIT IS COMPATIBLE WITH THE GLOBAL INDUSTRIAL PORTABLE AIR CONDITIONER WITH COLD AIR NOZZLES MODEL NUMBERS 292660 292661 292662 AND 293164. THIS CEILING DUCT KIT INCLUDES ONE 8' L X 12"" 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.