The insert works just as expected, and I love all of its features. It allows for different colors of flames as well as rock colors and it even has a variable heater that puts out just the right amount of heat as needed on my Texas winter evenings.
The installation can either be hung on a wall, or built into the wall or fireplace (as I did), but either way, the instructions are easy to follow and not all that difficult for a person with some simple carpentry skills.
I highly recommend this product as it is easy to install, has many different features, and is a beautiful alternative to a dusty, smoky, dangerous wood burning fireplace in your home. By the way, I would not have purchased a second one of these if the first one did not impress me so much. I am 100% PLEASED with this product, and I believe you will be also. Enjoy!