These came off of a F250 but I believe they fit all F series trucks with the same hole pattern. They are electric mirrors but the motors are intermittent in them and no good so I replaced with new on my truck. These can still be used manually and are in great shape except for a small hole on the backside of one. $30 for the pair.
Check the hole pattern on yours to be sure they are compatible.
**located at Mill Hill and Selwyn rd in Langford.