The Master Lock S3502 Wall Mount Group Lock Box contains a 12-lock hand caddy and removable key cup. Includes 12 exterior lock holes for personal safety locks, plus a hole in the latch for the control lock. A clear, impact-resistant window allows users to view locks and key(s) secured inside the box. Master Lock S3502 Group Lock Box Permit Station Features: 12 numbered lock holes for personal safety locks; safety padlocks sold separately. 430-Grade stainless steel with heavy-duty powder coating withstands outdoor elements and is highly resistant to corrosion Wall mounted for accessibility Clear, impact-resistant window for viewing secured key(s) during lockout Includes removable lock caddy for easy transportation of equipment locks to isolation points during lockout Removable key cup to collect and maintain visibility of secured key(s) during lockout, and easy retrieval of key(s) after release of lockout Pre-punched rivet holes offer option to attach a brass or aluminum laser-engraved tag Replacement lock caddy (S3503) and key cup (PKGP50837) available separately