Specifications and available models: Circular Distribution: An elegant cylindrical design that distributes air in all corners instead of 4 directions. Samsung 360 Circular Cassette Air Conditioner, 3 Ton - United Air Conditioning. WindFree Feature: Pushes air softly through thousands of small holes to avoid direct drafts. Cassette Air Conditioners - Capacities (BTU): Available in different capacities starting from 24,000 BTU up to 42,000 BTU. Samsung Cassette