STI 4100 Break Glass Stopper

STI-4100 Accepted by many fire marshals, these versions of the world famous STI Stopper II® are designed for areas where a ”break glass” cover is specified, such as unsupervised areas. Each device consists of a red polycarbonate cover, mounting frame, a pane of single-strength clear glass (easily replaced when broken), a glass-breaking bar, screws and anchors for installation. Gaskets are also available to improve weather resistance.

Three models are available for fire, the smaller STI-6100, the larger STI-4100 and the STI-4130 for surface mount; the STI-4130 is the KIT-900-R conduit spacer and the STI4100, the spacer will add two inches of depth and accommodate up to ¾” conduit. A fourth “generic” model (STI-6700) is available to cover devices other than manual pull stations. Also, the same size as the STI-6100, it includes a wall mount hanging clip for keys, etc. This model for non-fire applications simply says, “BREAK GLASS.”

Features / Specifications

• Fire alarm remains clearly visible and accessible
• Aesthetically appealing
• Fast, easy installation
• Accepted by many fire marshals. Obtain local fire marshal approval prior to installation
• Glass replacement is simple.
• Housing is mold of tough polycarbonate material
• Typical working properties of polycarbonate are -40° to 250°F (-40° to 121°C).