The "mounting strap" does not accommodate our ceiling fixture.  The holes and slots are too narrow for the self-provided (per the instructions) screws.  Additionally, there are two screws provided that do not serve a clear purpose.  We need to contact the manufacturer on how to attach this to our ceiling.  Frustrating.

Pros: Good price.  Good quality.
Cons: Poor instructions.  No parts list.  Incompatible "mounting strap".