Installed The Black Box Ultimacool Duo 5% precut window film to my rear passenger windows and rear window today. I was quite impressed how well the film went on but I do have some concerns. First of all it appears the film may have not been cut large enough hieght wise to get below the seal on the bottom of the windows. Leaving only a 1/16" gap(if that) at the top and it appeared to be 1/4"+ from reaching the lower seal. Im hoping that the seal does not catch the film when I roll the window down after the recommended cure time of 72 hours. Also I was finishing up towards dark and I put a spotlight on the film and can see what appears to be scratches I put into the film with the supplied squeegie. I dont think I will notice them under normal interior lighting conditions but can see them well with the spotlight on them. I have the same film except in 20% for the front side windows that im going to attempt probably Sunday so I can leave the windows up for the week (since I usually dont drive it weekdays) and allow them to cure. I will post some pics after I get the front windows completed.