Red Hound Auto Fold Down Utility Bed Body Step Heavy Duty Premium Galvanized Steel Flip Up Folding RV Camper Trailer RV Bus Step-up Safety Non Slip Tread Grab On Assist Handle Back plate is 4 1/2" x 2", step pad is approximately 2" x 4" 4" center-to-center. Strong, rust and weather resistant galvanized steel. Textured stepside finish for a more secure step. Durable, ready to handle tough environments