I have a 40" Light Bar on a Bronco/Raptor. Since I installed the AeroLidz, the wind and whistle noise from the light bar is completely gone, and it was bad! I had to go up a size, took my time time trimming it, and made sure to have patience working it on to my light bar, as it was a tight fit, which is good. Honestly, I wasn't expecting it to work, I had my doubts. I am extremely satisfied with the results! Total Awesomeness!