Fontaine Trailer Company (Fontaine) is recalling certain 2019 Fontaine Infinity trailers. These trailers were built with an under ride guard compliant for a wheels back trailer configuration, however, due to the customers design changes, the wheel set was moved forward and the vehicles no longer meet the definition of a wheels back trailer. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 223, “Rear Impact Guards,” and 224, “Rear Impact Protection.”