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STI-4100 STI-6100 Break Glass Stopper®

Model Description
Price *
STI-4100 Break Glass Stopper ® - Large
STI-6100 Break Glass Stopper ® - Small

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For places where a "break glass" cover is specified such as unsupervised areas.

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. 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 and anchors for installation.

Local fire marshal approval should be obtained prior to installation


  • Housing is molded of super tough polycarbonate and is UV-stabilized.
  • Aesthetically appealing.
  • Fire alarm remains clearly visible and accessible.
  • Lifetime guarantee on polycarbonate housing against breakage and damage in normal use.
  • Fast and easy installation.
  • Glass replacement is simple. (Suggestion: Order extra panes with each unit).
  • Accepted by many fire marshals.
  • Polycarbonate tested -40°F to 240°F (-40° C to 116°C)


See also:
Fire Stopping Sealants - Fire Stopping Sealants - Recommended for fire rated applications
Fire Extinguishers - We offer 2.5, 5, 10 and 20 LB Fire Extinguishers
Fire Extinguisher Signs - Vinyl Fire Extinguisher Signs
fire extinguisher
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