UL 608 Burglary Resistant Modular Vaults and Vault Doors 1 Scope 1.1 These requirements cover vault doors and vault modular panels (for use in the construction of vault floors, walls, and ceilings) of the type intended for use in financial institutions, commercial, industrial and mercantile properties, and the like, and that are relied upon to protect the contents from burglary attack. 1.2 These requirements are intended to establish the burglary resistant rating of vault doo