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 These 2 lock sets are designed for a 2thick door. They are each 3 X 5. For the lever unit, push a 3 X 5hole at the edge of the door. The other one is also 3 X 5". Feel free to use these items on your next door. The knob unit has been used on my latest model, soon to come. The lever unit has already been used on other models. Enjoy, you will.