This is a great product.  I had one similar that I purchased from a pet supply store but it wasn't nearly as nice as this model.  It is very sturdy and fairly easy to put together.  It took me about an hour and a half to put together by myself.  And the cutout door can be put on either the left or right side when put together.  It even comes with a sturdy liner for you to put the litter box tray in so if something leaks it won't ruin the wood.  Overall, I am very pleased with this product.