New old stock GM radiator fan shroud we have narrowed down to one of these three applications: Part# 3651021 is 1939 Chevy Commerical & Utility trucks except COE.  Part# 3654315 is 1940 same applications.  Part 3664882 is 1941-46 same applications.  The outside of just the ring measures 19" in two places and 19-3/4" in one place.  It is pretty heavy, but could be flexed just a little.  Measuring diagonal, from the bracket hole on the pointed single bracket to the opposite double hole bracket is about 25" while a diagonal measurement from the other single bracket to the opposite double bracket is about 21.5".  The depth of just the ring is 1.75" while the overall depth including the brackets is just over 3", but the pointed bracket sits about 3/8" shallower than the other brackets.  We have one more of these exactly like this one with a handwritten number of 3654315 - which is 1940, but there is another one on ebay exactly like both of ours that states it is for 1941-46.  If you know the exact application, we would appreciate you sharing your knowledge.  We cannot find any other ones with online searches to verify.  Very nice piece in GM primer with a little surface rust - see photos.  Please be sure this fits your needs before buying - no returns.  Ship cost is for continental US 48 States.  Sales tax may be applied by ebay for some states. Thanks!

NOTE:  Sold as-is - no warranty.  No returns.  Please be 100% sure this fits your needs.  Even though eBay is adding a video to every listing saying they promise items fit your vehicle, we do not accept returns and it is still your responsibility to be 100% sure this will work for you before you buy.  Thank you.