The product works great however the installation instructions leave a little to be desired. There are not enough pictures of the assembly from different angles and the location that they have you place the template doe not end up the same as in the diagrams (likely based on a variance of cooktop models). Also, they provided a 5" vent hose connector to replace the 6" version that came with the cooktop so it can be connected to the 5" flex hose and ductless kit but the kit included hose clamps for a 6" hose so they wouldn't close enough to secure the hose. I had to go to Home Depot and purchase 5" hose clamps (x2) to complete the install.