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 Simple Explanation of How Air Flow will reduce Summertime Cooling Temperatures in your Home by Lower Attic Temperature. The natural air flow will also prevent Ice Dams from forming on the Structural Members in the Attic during the Wintertime Heating Season. See the Final Build Photo Presentation at the Link Below