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 says, “BREAK GLASS.”

Features / Specifications

The fire alarm remains visible and accessible

Aesthetically appealing

Fast, easy installation

Accepted by many fire marshals. Obtain local fire marshal approval before installation

Glass replacement is simple.

Housing is made of tough polycarbonate material

Typical working properties of polycarbonate are -40° to 250°F (-40° to 121°C).