Description: Fittings Kit for 18 + 18 Indoor Combination; Installation Note: Allows two ASU18RLF1 indoor units to be used on an outdoor AOU36RLXFZ1. Requires special piping. Limited to only 18,000 BTU models. Total BTU capacity is limited to 31,600 BTU in cooling. The kit upsizes linesets to 3/8"…