The doors on this panel open up to give you access to the side of your sheep/goats when in the #974 auto headgate. Constructed of 1 ¼” and 1” square tubing, with an 18 gauge solid sheet. The solid sheet sides help with moving sheep/goats in tight areas since they cannot see movement to their sides. The panel includes (2) #945 drop pins. Dimensions are 40 ½” long