k i am no mechanic or body guy, but i have swapped a few out . after the one screw bellow i think, there are 2 sliding clips one in the middle and one up near the top . you have to push in and slide the vent up ,it really wants to rub the body there if you put some type of a giude there plastic knife is what i use and push in where you think the clip is and up . i broke my first one and crazy glued it back together . make sure you study that one so you understand it before you do the other one. with the windows if you slide it forward it gives you a little more flex in working the rubber and frame outward ,once the rubber gets away from around the upper back corner its pretty easy the top tips out first ,and it stays as a unit,install the reverse with a little soapy water . although there is a local guy lance here who uses jergens .