2 returns both 25x13 under returned Needs return cut in into the master bedroom Master bedroom suite - this portion of the duct system is undersized 18x19x8 10.5x8.5x8 Fed by 10" Living room - this portion is over sized 15x15x8 Fed by 2 8" Bedroom - also oversized 12x11.5x8 Fed by 6" Mini split recommended for the bedroom due to better guarantees than a partial duct system Comfort Advisor Monday December 1