Many vent covers sold are not high enough as you stated and that was a big concern I had as well. However, some are indeed high enough so that powered vent lid will not hit it. I will see if I can find what I purchased but it has been a while... My cover doesn't get hit, but I did purchase my first cover for this rv and intended to use it for the powered vent, which I saw (before installation) that it would have hit the vent lid so I used that cover on the front non-powered vent and then purchased a different cover for the powered vent that has enough clearance. ~CA