The Heritage Brass Square Bathroom Turn & Release Antique Brass is designed to be used in conjunction with the M.Marcus door handles with the antique brass finish. The release can be easily opened from the outside of the door, should there be any emergencies. The turn & release has a 54mm diameter. Other Variations There are other variations of this turn & release available in different finishes - these can be found as separate products in the Bathroom Turns category.