Ok my Advise is, if you have kinky curly hair go with Rusk Unt-Curl Straightened is excellent your hair, shine and Straight, no firzz you gona loved. Japanesse is to strong you have to be sure about what product beacause kinky curly hair is fragil.
ALejandra

You can buy the coupler and additional hose/duct from the manufacture. This coupler is a female type coupler, that once your screw the hose into the coupler it is a smooth finish.
You can also remove the attachment that is connected to the portable airconditioner and install the new hose/duct to the desired length and connect the end of the hose/duct to termination or the exhaust attachment that is usually on the window. This way will look much cleaner or original.

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