Product review (3 stars): Needed a slight modification to fit the slot
I gave it only 3 stars because it didn't quite fit into the slot of my 10 year-old Whirlpool dryer. It's slightly wider by about 1/16 of an inch but the thickness and length is correct. The bottom part of the corners are squared whereas the original were rounded. (I'd replaced the original lint trap screen once before when I bought it locally from Sears 4 years ago and it fit perfectly, but it's currently out of stock.)  I've since used some WD-40 to make the edges slicker to allow easier insertion along the curved guide rails and I rounded the bottom corners using a box cutter. It's still a tight fit but it works. It's rather stiff now (making the screen warped and susceptible to ripping if I'm in a hurry or not paying attention) but after it breaks-in I'm sure it'll be more flexible allowing for a smoother insertion. It pulls out easily though.