The hose is 5.9 inches/ 15 cm in diameter (outer edge to outer edge), anti-clockwise twisting direction.
Universal Fits to various Portable Air Conditioners using 5.9" diameter hose (**Besides, if looking for 5" Hose, search 816928000257)
Compatible to LG AC using 5.9" inches diameter hose.
It is EXTRA LONG hose, can extend to 72" /6 foot /183cm long
Excellent quality.