Selection box question?

So when the user picks up an object, it basically creates a green selection box. I’m gonna assume this is just a green transparent brick.

But my question is, how can I get the dimensions of a model and create a part to scale to the same dimensions?

SelectionBox is it’s own class

SelectionBox is an object which renders a 3D box around its Adornee when it is a descendant of the Workspace or anywhere where GUI objects are rendered. The box’s geometry consists of rectangular prisms forming an outline/wireframe in addition to a surface for each of its faces. By default, only the outline is visible.