This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 This is a very popular Single Wide Step... used for all Newer Type Caravans.... with a Higher chassis or floor... This is a Very Low poly Model... Only! 683 kbs..