Product review (3 stars): it is better than expected
The unit is robustly built, heavy gauge stainless steel, and quiet.  Once installed, it is better than expected.  However, the installation was extremely difficult.  There are "knockouts" for the mounting and electrical holes.  Knockout holes are typically precut, these are not.  They need to be drilled out.  The unit arrives with wiring coming from a top connector which needs to be relocated for most installations.  Access to the internal electrical box is extremely tight.  Installation should probably be done by a professional unless you are properly equipped.