Product review (4 stars): Great Hoods. Great Value.
I bought 4 of these for a condo conversion project.  The instruction leave something to be desired but we did figure it out.  One thing though the instructions say it can be mounted to a sheetrock ceiling with hollow wall anchors which are included.  That would be a really bad idea.  The sheetrock would never support this unit.
That said, it is a great product and a great value.