REGISTER FOR AIR-CONDITIONING

A rear wall of an instrument panel has an outlet port and an inclined wall. An angle defined by the inclined wall and a vertical plane is from 30° to 40°. An upper fin and a lower fin are both supported by fin pivots. The lower fin is configured to be inclinable downward by at most 30° with respect to a horizontal plane. When the lower fin is inclined downward by a maximum angle, an interlocking mechanism inclines the upper fin together with the lower fin in an interlocking manner such that an angle of the upper fin with respect to the lower fin is greater than that when in a horizontal state. A bottom wall of a retainer includes an inclined surface located under an upstream end of the lower fin. The inclined surfaced is inclined upward toward the downstream end.