Patent ID: 8449359

Claim:
A structure for installing an air-conditioning duct to an air-conditioning unit, the structure for installing the air-conditioning duct having a first air passage and a second air passage abutting each other to the air-conditioning unit having a first air supply outlet and a second air supply outlet abutting each other, wherein the first air supply outlet and the second air supply outlet include a U-shaped auxiliary wall having a notched part at one side therearound so as to surround the first and second outlets on three sides and a supply outlet boundary wall separating the first air supply outlet and the second air supply outlet wherein one of said first and second supply outlets projects farther than the opening of the other of the first and second supply outlets, and a duct side step part is formed between an opening rim of a first duct and an opening rim of a second duct by forming the opening rim of the first duct to project outward farther than the opening rim of the second duct, the duct side step part is contacted with the supply outlet boundary wall to install the air-conditioning duct to the air-conditioning unit.