casing made of ABS (FR)
Backward-curved centrifugal impellor using PA66 (FR)
ABS (FR) connection box 
External rotor motor with low temperature rise                               
Motor is equipped with automatic reset thermal overload protection
NSK ball bearing, acceptable for continuous operation of 50000h
Operating temperature range﹣20℃~50℃
Insulation Class F
Enclosure class IP44