May be best in market. Takes only few days to deliver to Thailand. Excellent quality and performance. Agents are quick responsing and deliver precise information. / The building of a housing is quite tricky. We would wish, Airwoods offer simple  connectors to 4-6" pipes, made of ABS. (We can not use any of the offered metal housing, because of there small filters. Instead we use "Xiaomi-Style" round filter with about 4-times capacity. Everywhere available.)  /  We combine room airflow for CO2-level with finedust control. Customer can each try for few days, because this in new in market for "1-2 room appartements".

great