Followed provided video. Only "issue" was the video showed the installation of the window upside down. According to other instructions from other sellers, the vents face downwards, not upwards as shown. There is a "stamped" impression on the aluminum frame with an [up arrow] with the word "Oven" that presumably means that that surface should face the oven. while not mentioned in the video, the broken part confirmed that placement as correct, as well as the orientation of the vent (downwards).