I received this fireplace today and I am very disapointed on how fragile the fiber glass is.  We were very careful while putting it together...  the base of the fire place has large crack; it is not very noticeable though.  The mantel has several nicks and dents as well as the body of the fireplace... 
The insert is fine and it works well.
The fireplace looks very nice, I just have to figure out how to fix the cosmetic damages.
I would send it back but repacking this thing would be very difficult sice the original box was falling apart.