The punkah-louvre directs a stream of air from the supply trunk in any direction within a cone the angle of whose apex is about 85°.
Ivithi lesikroba lokungenisa umoya efestileni okanye elucangwehi lungangqala kunxweme lomoya osuka othunyelwe kwitranki nakweliphi icala ngaphandle nekhowuni ye-engile ekwincam eku 85°.