This allows you to get a quick preview of any of the content available to you (fig 4). Hover over one of the listed door icons, hold down the control key and roll the mouse wheel forward. Tip: Previewing Door Families in the Metric Library

Remember also that you can purge unused families from the manage tab on the ribbon. Don’t be tempted to load all of the doors as this will overload the project and slow things down. Open the door category and you will see that your new door types have been loaded into your project. Next expand families in your project browser. Once you have made your selection click open. Hold the control key and select the doors that you want to load into your project. You can single click on any door title and it will preview in the top right of the dialogue box (fig 3). Having accessed the Metric library, open the door folder and you will see a list of all the different types that are available.

Previewing Door Families in the Metric Library To load more door families from Revit’s metric library we can either click the load family button which is available when doors are selected, or we can click the insert tab and load families from there. For example, if you click the door tab on the Architectural Ribbon and then click the drop down menu in the Type Selector at the top of the properties palette, you can preview the pre-loaded doors in a standard Revit Template file (fig 1). You can preview components in the Type Selector to see what families are in the project. Revit comes stocked with a lot of components in the Metric Library e.g.

Revit 2020 family library