STI 3100 Stopper II Conduit Spacer with Frame, Clear

Optimize pull-station installations with the Safety Technology International STI 3100 conduit spacer — a clear, purpose-built mounting device that adds two inches of depth to Stopper II pull stations for tidy, code-conscious wiring. The transparent polycarbonate construction is UV-stabilized for lasting clarity and allows quick visual inspection during service, reducing troubleshooting time for security and fire monitoring teams. Integrated top and bottom knockouts accommodate both 1/2" and 3/4" rigid conduit, and included fill pieces keep the enclosure sealed and professional when conduit isn’t present. At 8.5" H x 5.5" W x 2" D and designed for surface-mount applications, the STI 3100 simplifies retrofits and new installs in fire mounting & enclosures used in security, surveillance, and life-safety systems. Compatible with the Stopper II product line and adaptable to weatherized builds when combined with appropriate gaskets, this spacer helps maintain system integrity while speeding installation. Order the STI 3100 today to streamline pull station mounting and improve uptime across your security and fire monitoring deployments.

• Adds 2" of mounting depth to Stopper II pull stations for cleaner, code-compliant wiring
• Clear, UV-stabilized polycarbonate lets technicians inspect wiring and components without removal
• Top and bottom conduit knockouts accept 1/2" or 3/4" rigid conduit to simplify installation
• Includes knockout fill pieces to maintain a finished appearance when conduit isn’t exposed
• Surface-mount form factor (8.5" H x 5.5" W x 2" D) streamlines retrofits in fire mounting & enclosure systems