GREE Multi+ Ultra Series 42,000 BTU 5-Zone Universal Floor/Ceiling 9K+9K+9K+9K+12K Ductless Mini-Split System - MULTIU42HP230V1DO,4xFLR09HP230V1BF,FLR12HP230V1BF With the GREE Multi+ Ultra Series ductless mini-split system, you can enjoy the freedom of keeping multiple rooms comfortable at once without having to sacrifice aesthetics. The quiet, sleek design inherent to any of the compatible indoor air handlers offers advanced performance with a high efficiency rating of up to 20 SEER2 in cooling and 10 HSPF2 in heating. With its efficient and effective performance, the GREE Multi+ Ultra Series ductless mini-split systems make it easier than ever to maintain an optimal heating or cooling performance, regardless of the weather, that is unmatched in both quality and affordability. Product Manual GREE Multi Plus Ultra Series Sales Brochure GREE Multi-Zone Compatibility Chart