Like all of the other reviews have said, it did come in 3 boxes, but delivered between 2 separate days.  Packaged extremely well.  Took my 
husband and I almost 3 hours to put together.  Instructions are very easy to follow -just pictures, no words.  We are overall very pleased with this purchase and addition to our home.  Love the various different features of the fireplace.  Have not used the heat so much as it hasn’t been that 
cold yet.  Be prepared to go to war with the sticker on the firebox.  I used Goo gone and came off perfectly.