Yale D292 One-Sided Deadbolt with Occupancy Indicator
Schlage B571 One-Sided Deadbolt with Occupancy Indicator
Door Lock Indicator,Stainless Steel Privacy Bolt Door Lock Indicator with Vacant Engaged Indicating and Screws Fittings for Toilet Dressing Room Use - Amazon.com
Door Lock Indicator,Stainless Steel Privacy Bolt Door Lock Indicator with Vacant Engaged Indicating and Screws Fittings for Toilet Dressing Room Use - Amazon.com