This is a Global Industrial 20" Portable Evaporative Cooler
Model No: 600580
It is a heavy-duty, direct-drive commercial cooling unit engineered to drop air temperatures by up to 26°F in hot, low-humidity spaces. It combines a high-volume fan with a large water reservoir to provide an energy-efficient alternative to standard air conditioning.
It comes with Hardware.
Cooler looks like it has not been used. Please see the pictures. It came from a big corporation close-up.