Dayton Model 4C418 20" Box Fan Mar 30, 2020 13:41:10 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Duane B on Mar 30, 2020 13:41:10 GMT -5 I bought this fan a while back from Andrew Block on eBay. It's in great cosmetic condition and it runs nicely. It has that lovely harmonic startup sound that these box fans are known for.