Pouring structure for battery pack

An intake duct cover 40 has bolt inserting portions 44 formed by making generally V-shaped cuts in the respective ends of a bracket section 42. Bolts 50 are inserted into the respective bolt inserting portions 44 of the intake duct cover 40 and screwed into respective nuts 16 of mounting brackets 15 welded to a floor panel 11, to fix the intake duct cover 40 to the floor panel 11 and thereby fix an intake duct 30 to the floor panel 11.