Three starts isn’t a terrible review, but there are some issues that some people seem to have. 

1) The boards were warped and depending which direction it curves it actually created a battle of seesaw trying to keep the tongue and grooves lined up to the next board. 

2) The softened edges for the diagonal boards were only on the top which forced me to run the boards in pattern that wasn’t even an option. A little sanding fixed that. 

3) The grooved board for the track on the bottom was splintered. Nothing a little wood glue and sole clamps couldn’t fix. 

4) They give you drywall screws instead of wood screws. Not a huge problem, but still not sure why. 

If you receive a door that is perfectly straight you shouldn’t have a problem and it will be a quick simple project to put together.  All and all it’s a good door and if I wasn’t lazy could have made myself for maybe 40 in material.