Backward inclined fans are called backward inclined fans because the blades rotate in a backward direction relative to the impeller.

Rear tilting fans are suitable for relatively low airflow and high pressure conditions.

Typically the static pressure efficiency of a backward inclined fan can be up to 70% or more, and up to 80% for wing type impellers.

Rear inclined fans have a lower outlet air speed, so in comparison to front inclined fans, the speed will be higher to reach the same air volume, and the blade

The wheel size is larger, but it is easier to output higher pressure and is more efficient.

Rear tilting fans, unlike front tilting fans, are not prone to overloading.