What is the height of the 390K sander? Support December 12, 2022 20:39 Updated It is 4.5 inches tall. Related articles What effect do the air regulator and air hose have on pressure / pressure drop? How is the laser on the 3700L powered? Will the 890 router run on 50Hz? How do I connect my generator to my house for emergency power? How to check the repair status of my tool Comments 0 comments Please sign in to leave a comment.