Hi All We put rubber bumpers on the doors going out of recital hall as well as the walls in the hallway where they park the piano. The stuff we used is used on piers to keep boats form be damaged. It is thick, about 3" I'd say, and when the piano hits it it gives yet the lid does no come in contact with the wall. We also took the emergency crash bars off the doors. But in order to do that we had to remove the locks as well. However this hall is never locked anyway. While we still get damage from cases and music stands, the damage from moving the piano thru the doors out into the hallway has pretty much been eliminated. Otherwise keep your black marker handy. Phil Sloffer Indiana University
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