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1. FIRE PRODUCTS
For more information, call 1-800-888-4784 (4STI) or visit www.sti-usa.com
KEY features
General Information
· 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.
· Three year guarantee against
breakage of polycarbonate in
normal use.
Design
· Glass replacement is simple.
Suggestion: Order extra panes
with each unit, for immediate
replacement.
Construction
· Housing is molded of tough
polycarbonate material.
Installation
· Typical working properties of
polycarbonate are -40° to 250°F
(-40° to 121°C).
Options
· Gaskets available to improve
weather resistance.
Product Overview
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.
how it works
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 SUB-900-R conduit spacer and the
STI-4100, 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. 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.”
STI break glass
stopper®
STI-6100 STI-4130
NOTE: Glass is clear — only appears dark for photo purposes.

2. Printed in U.S.A., © 1987-2009 Safety Technology International, Inc.
2306 Airport Road
Waterford, Michigan
48327, USA
Tel: 248-673-9898
Fax: 248-673-1246
Toll-free: 800-888-4784
info@sti-usa.com
www.sti-usa.com
Unit 49G Pipers Road
Park Farm Industrial Estate
Redditch, Worcestershire
B98 OHU England
Tel: 44 (0) 1527 520 999
Fax: 44 (0) 1527 501 999
www.sti-europe.com
06/09Subject to change without notice.
accessories
Several accessories are available for the Break Glass Stopper.
They include a polycarbonate mounting backplate (recommended
for all installations with irregular mounting surfaces), additional
spacer for stations with greater depth or exposed conduit and
tamperproof screws (STI-4100 only).
NOTE
Local fire marshal approval should be obtained prior to
installation.
WARRANTY
Three year guarantee against breakage of polycarbonate in
normal use.
STI Break Glass Stopper®
Dimensions and Technical Information
models available
STI-4100 Break Glass Stopper - large
STI-4130 Kit containing both STI-4100 and SUB-900-R
STI-6100 Break Glass Stopper - small
STI-6700 Break Glass Stopper Keys Under Glass
SUB-08 Replacement Break Glass Tool
SUB-09 Replacement Glass for STI-6100
SUB-10 Replacement Glass for STI-4100
SUB-67 Replacement Glass for STI-6700 - Reads “Break
Glass”
SUB-900-R 2” Conduit Spacer (red) for STI-4100
STI-6702 Tamperproof Screw Kit
STI-1280 Backplate for STI-4100
STI-3002 Weather Gasket - large*
STI-3003 Conduit Gasket 1/2”
STI-6501 Weather Gasket - small*
*Gaskets may need to be trimmed prior to installation.
MOUNTING FRAME
INSERT PLASTIC KNOCK-OUT INTO SPACER
NOTCH IF CONDUIT IS NOT NEEDED
(2) PROVIDED
SUB-08 BREAK GLASS TOOL
SINGLE STRENGTH GLASS
SUB-09 FOR STI-6100
SUB-10 FOR STI-4100
SUB-67 FOR STI-6700 PRINTED
WITH “BREAK GLASS” ONLY
POLYCARBONATE
COVER
19001 ALLEN HEAD SCREW
SUB-900-R CONDUIT SPACER
(FOR USE WITH STI-4100 ONLY)
MOUNTING FRAME
INSERTS (2) FURNISHED
GLASS BREAKER
SINGLE STRENGTH GLASS
POLYCARBONATE
COVER
LOCKING SCREW
SUB-900-R CONDUIT SPACER
(FOR STI-4100 ONLY)
19013 #10 x 1 1/2 in. PHIL PAN HEAD
(4) PROVIDED
CABLE FRAME
N TAB
OVIDED
OVIDED
COVER
19003 WALL HOOK
STI-6700 MODEL ONLY
TOP TAB
INCLUDED
WITH
STI-4100
ONLY
TOP TAB
INCLUDED
WITH
STI-4100
ONLY
BACK VIEW
7 in.
(178mm)
4.75 in.
(121mm)
SIDE VIEW
5.41 in.
(137mm)
1.5 in.
(38mm)
6.625 in.
(168mm)
4.16 in.
(106mm)
3.97 in.
(100mm)
1.66 in.
(42mm)
BACK VIEW
7 in.
(178mm)
4.75 in.
(121mm)
SIDE VIEW
5.41 in.
(137mm)
1.5 in.
(38mm)
6.625 in.
(168mm)
4.16 in.
(106mm)
3.97 in.
(100mm)
STI-6100 and STI-6700
1.66 in.
(42mm)
BACK VIEW
7 in.
(178mm)
4.75 in.
(121mm)
SIDE VIEW
5.41 in.
(137mm)
1.5 in.
(38mm)
6.625 in.
(168mm)
4.16 in.
(106mm)
3.97 in.
(100mm)
STI 6100 and STI 6700
1.66 in.
(42mm)
COVERFRAME
BACK VIEW
7 in.
(178mm)
4.75 in.
(121mm)
SIDE VIEW
5.41 in.
(137mm)
1.5 in.
(38mm)
6.625 in.
(168mm)
4.16 in.
(106mm)
3.97 in.
(100mm)
STI 6100 and STI 6700
1.66 in.
(42mm)
INSTALLATION SHEET
BACK VIEW SIDE VIEW
9 in.
(229mm)
6.25 in.
(159mm)
5.39 in.
(136mm)
6.84 in.
(173 mm)
4.96 in.
(126mm)
8.5 in.
(216mm)
BACK VIEW SIDE VIEW
STI-4100
1.5 in.
(38mm)
2 in.
(51mm)
2.43 in.
(62mm)
SUB-900-R
9 in.
(229mm)
6.25 in.
(159mm)
5.39 in.
(136mm)
6.84 in.
(173 mm)
4.96 in.
(126mm)
8.5 in.
(216mm)
STI-4100
1.5 in.
(38mm)
2 in.
(51mm)
2.43 in.
(62mm)
BACK VIEW SIDE VIEW
COVER SPACERFRAME
SUB-900-R
9 in.
(229mm)
6.25 in.
(159mm)
5.39 in.
(136mm)
6.84 in.
(173 mm)
4.96 in.
(126mm)
8.5 in.
(216mm)
STI-4100
1.5 in.
(38mm)
2 in.
(51mm)
2.43 in.
(62mm)
STI-3100
INSTALLATION SHEET