This optional tailgate for the Model 375 or 450 chute is "split" in the center with sheeted sides instead of open bars. Each side of tail gate slides out to provide complete access into the chute. When closed, tailgate offers larger coverage. This will eliminate any unwanted animal entry into the chute. Operating lever is located near front of chute. Spring retraction assures lever is not in your way. This tailgate is much easier to use than standard lift style gates. Above pricing is for new 375/450 chute installations. If you want to replace your older lift tailgate see the FM460KIT.