The Echo comes standard with framed front and side solid (non vent) window configurations and an LED brake light above the rear door. This model is backed by a 3 year warranty against manufactures defective as opposed to limited lifetime warranty the rest of the Ranch line offers. You do have the choice to add options to the Echo model; ask your authorized Ranch dealer for more details. The Echo truck cap also includes a great fit, Dupont paint, "unibody" molded and rolled fiberglass base rails, a double T rear door, recessed LED brake light above the rear door, tight seal, tri-cell reinforced roof, and trimeless design edges. This is for the budget minded customers who does not necessary need standard features that come on the Sierra model.