DUCT WITH LINKAGE STRUCTURE

The present invention relates to a duct with a connection structure and, more particularly, to a duct with a connection structure which can prevent the inside air of the duct from leaking outside through a connection unit connecting the duct with another duct. The duct with the connection structure according to the present invention comprises a tube-shaped insulating unit (100); a connection unit (200) which has an insertion groove (210) formed at one side for inserting the insulating unit (100) thereinto and a slit (230) formed at the other side in the horizontal direction; and an H-shaped coupling unit (300) which makes the side section of a pair of connection units (200, 200′) forms an H-shaped connection hole (220) when the connection units (200, 200′) face each other and come into contact with each other and makes the connection units (200, 200′) couple with each other while sliding through the H-shaped connection hole (220).