The Firechief® Lettergard is a fire-protected letter box that stops flames at the entry point, safeguarding your property long before a fire can take hold. Using the advanced Pyrocloud™ suppression system, it automatically detects heat and floods the space with a certified, eco-friendly extinguishing aerosol. Built strong, designed clean, and fitted with a secure lockable door, the Lettergard delivers complete confidence every time you leave the premises unattended.