This Surface-Mount Slam Latch Set with inside safety release is widely used for large-size insulated enclosures, such as cold stores or containerised units, where a surface-mounted latch is preferable to avoid breaching the integrity of the door.
With slam action against a roller striker, this system can be used on doors flush-fit against the frame. There is a Glow-In-The-Dark inside safety “punch” handle for emergency release.