Fit perfectly in my space and is amazing quality.  I am not sure why others had an issue with their drawers unless they didn't follow the instructions on how to assembly the unit. Mine is perfect. 
Very easy to follow instructions.  Went together perfectly.  Did it by myself in an hour.  
Only issue I had was the fireplace insert did not work.  Wayfair customer service was excellent and sent me out a replacement ASAP and had their team make sure it was working properly before shipping it to me.  New insert works as it should and puts out very adequate heat.