I tried this on the '51 4 door I owned in high school in 1959. The car had been driven extensively on dirt roads when it was new, and every time I hit a bump, a fine shower of dust would descend from above. My high school girlfriend did not appreciate this at all. I carefully removed it with no damage, and washed it in my mom's Maytag, being careful to use a little Tide and cold water. I hung it to dry out on the clothesline (remember those) until it was dry. I WAS smart enough not to put it in the dryer. After it was completely dry, I tried to re-install it. It was 4" short front to back and 2" short side to side. The bare steel didn't cause any more dust showers, but it didn't satisfy her. Women!