STI 13520NW Universal Stopper with Horn Enclosed Back Box Open Mounting Plate, No Label Included, White

Protect mission-critical access and alarm points without slowing response times. The Safety Technology International STI 13520NW Universal Stopper is a versatile protective cover designed to safeguard pull stations, keypads, intercoms, emergency buttons and light switches from accidental damage, vandalism and the elements while preserving full usability. Constructed from UV-stabilized polycarbonate (PC) and featuring an enclosed back box, this security cover delivers durable indoor/outdoor protection and improved resistance to tampering and moisture. The open mounting plate and universal fit make installation and retrofits fast for facilities teams, and the cover’s low-profile or dome configurations accommodate devices up to 4 inches deep without obstructing operation. Ideal for fire, access control and surveillance environments, the STI-13520NW supports compliance and reduces costly downtime by keeping critical devices functional and visible for monitoring and emergency response. Specify this protective cover where robust yet unobtrusive protection is required—order STI 13520NW to enhance site security and streamline installation in commercial, institutional, and industrial deployments.

• Protects critical devices (pull stations, keypads, intercoms, switches) while allowing legitimate operation
• UV-stabilized polycarbonate construction resists impact and weather for reliable indoor/outdoor protection
• Enclosed back box provides tamper and moisture resistance for improved security and longer equipment life
• Open mounting plate and universal design speed installation and simplify retrofits across multiple device types
• Low-profile and dome options with up to 4" maximum protrusion to suit aesthetic and space requirements