Now take Rotate tool of the tool panel and rotate it in the same direction as your model. So just make the click and place this door anywhere on the ground. I have downloaded this door, and you can see it is not in the same direction as this model. Now let us download a door the same as we did for having a window component. I will take the Scale tool of the tool panel and fit it according to this model this. So you can scale components according to your model also. You can see it is not according to the shape of this model. Or, without making a click, you can directly place it in your desired place or take the Move tool from the tool panel if you have placed it already anywhere on the ground and move this window to your desired place of model. Now make a click to place this component anywhere on the ground. I have downloaded this model also from the 3D warehouse. Now you will have this window on your model. I will click on the Yes button of this pop box. You can go with Yes or NO according to you. If you click on Yes, then it will directly come on your model without saving. Once you click on the Download button, it will ask whether you want to use this component directly into your model or download it. Once you click, details of the chosen component will open like this.

You will find a number of different windows component previews in it.

Now you can search your desired component in the Search box of this dialog box, such as I want a window component, so I will search Windows in it. Make sure you have your internet connection is On. Now click on the 3D Warehouse option, and once you click, this dialog box will be open. Once you enable it, you will have a Warehouse panel which you can place anywhere on the toolbar area.

How to access 3d warehouse in sketchup