Hi drep,
I have no idea about brand name. I purchased the fans at "Amorn Shop" in Thailand. They are most probably chinese products.
I estimate an air flow of 2,000cubicmeters/hour at a fan total pressure of 150Pa.
They were noisy at low rpm when connected to a commercial light dimmer, but whisper when connected to my circuit.
My circuit has been tested up to 2.5KW with no malfunction (misfire etc.)
One remark concerning motor control: If the motor is started at e.g. 110V it will continue running at 80V when it has gained rpm. My evaporative cooler makes use of that kind of control by cutting back power after one second. (Motor is a three speed type MCU controlled)
Boncuk