Used this and the adhesive guide to replace the cracked display on a relative’s 21.5 inch iMac. Thank you, iFixit! These guides and the toolkit I purchased from iFixit years ago have saved me roughly $200.00 vs. having a repair shop do it. I still have a 2008 24inch iMac up and running thanks to this website!
I agree, line them up gently, don’t pull on the strips too hard or they will stretch.
Great guide, I highly recommend a service wedge. I bought a foam one on Amazon that has a removable section so it can be used on a 21.5 inch or 27 inch , and it made the job easy.