1977 Ford F150 Defrost deflector

My 1977 Ford F-150 is a great old truck but in the winter the center of the windshield was not getting defrosted. I made this deflector out of TPU to use in the winter. Will remove in summer. Just insert in defroster vent. Tried it out today, we got 6" of snow. Tracked a lot of snow into the cab and the defroster worked great.