On self-close style of cabinet, doors are held open by means of a fusible link.
| Justrite Replacement Fusible Link for Safety Cabinets with Self-Closing Doors, 29988 If inadvertently left open, under fire conditions the link will melt at 165°F (74°C) and automatically close the doors to protect the contents. Justrite Replacement Fusible Link for Safety Cabinets with Self-Closing Doors, 29988.