I believe all Whirlpool built dryers with the lint filter at the back/top are now built designed with the handle integrated also as a cover. They've been doing this since at least the early 2000s if I'm not mistaken. We actually had a Kenmore dryer for almost my entire childhood that had that design, with the hamper-style door, and it had the hinged door cover over the lint filter opening as well, so I think for a time that particular design was across all WP/KM/KA dryers for a while. I can't remember what series our Kenmore was, but it was when they were still using the dark brown control panel scheme, with the faux wood-grain top, but the timer dial was to the left, rather than in the center like the older Lady Kenmore style machines. My mom always hated that flap cover, so she took it off and the entire time we had it, it just had a rectangle hole in the top with the handle peeking out, but it never affected anything.