*%kd HELPFUL HINTS FOR USING SERPENTINE EXTENSION POLES % Thi series all come with @ pair (for. the two connection the canopy of 27 4™ and 8 expressionless: The 27 pole has a universal joint that accommodates slope ceilings, and also is used when the application requires the rail/track to be as close as to the canopy as possible. To use the 27 pole, first remove the male end thread that is factory installed to the canopy.