Reznor’s DS destratification fans successfully prevent stratification in high buildings.

They are intended for use in commercial and industrial premises, where they provide additional air circulation, improving environmental comfort.

Temperature differences in high buildings of up to  20°C are not unheard of! The DS fans redistribute warm air from the top of the building more evenly.
This increases comfort for staff on the floor level and helps control your operational costs, since the DS significantly decreases warm-up time of air heating systems.