Autodesk Revit Architecture

[#1]

I need a file called Curtain Wall Dbl Glass.rfa. It's missing in the Doors folder in my UK Fmaily Library in my software.  I've found one on the web. I've copy/pasted it onto my Desktop. How do I now load it into my Revit project please?

[#2 · Accepted solution]

Go to Insert tab --> Load family--> load that file. 

then you need to select the curtain wall panel where you want to place your door ( to select it, you need to hover over the edge of that panel and press tab a couple of time until you select that panel) then you can change the family type from properties to that door.. ( curtain wall doors can be accessed from there) 

S.