The PLA Four-way Ceiling Cassette offers an extensive lineup with capacities ranging from 12 to 42 KBTU/H. The PLA includes the Draft Reduction vane setting which adjusts airflow direction more horizontal than the standard vane setting, thus reducing drafts dramatically. The draft reduction can be set for only 1 vane. PAR-40MAAU is required for this setting. The four-way ceiling cassette provides an astonishing 72 unique airflow patterns available to accommodate different room layouts. Select any combination of 2, 3, or 4 vanes to deliver air into the area. Further, personalize comfort by adjusting the vane up or down to set air direction.