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Easy to install protective covers help assure smoke detectors will remain operational where vandalism and accidental damage are causing false fire alarms or high maintenance costs.

Polycarbonate models are offered in clear, black or white. Steel models are offered in stainless steel or white coated.
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STI-8100 Smoke Detector Damage Stopper® Protective Cover

STI-8100 Smoke Detector Damage Stopper® Protective Cover

STI-8100-BK Smoke Detector Damage Stopper® Protective Cover

STI-8100-BK Smoke Detector Damage Stopper® Protective Cover

STI-8100-W Smoke Detector Damage Stopper® Protective Cover

STI-8100-W Smoke Detector Damage Stopper® Protective Cover

STI-8130 Smoke Detector Damage Stopper® Protective Cover

STI-8130 Smoke Detector Damage Stopper® Protective Cover

STI-8200-SS Smoke Detector Damage Stopper® Protective Cover

STI-8200-SS Smoke Detector Damage Stopper® Protective Cover
Description N/A Two models available: STI-8100 for flush mount and STI-8130 with a spacer for surface mount. They are offered in clear, black or white polycarbonate.

Easy to install protective covers help assure smoke detectors will remain operational where vandalism and accidental damage are causing false fire alarms or high maintenance costs.

Polycarbonate models are offered in clear, black or white. Steel models are offered in stainless steel or white coated.
N/A Constructed of tough polycarbonate material, this flush mounted cover helps protect smoke detectors from vandalism and damage.

Easy to install protective covers help assure smoke detectors will remain operational where vandalism and accidental damage are causing false fire alarms or high maintenance costs.

Polycarbonate models are offered in clear, black or white. Steel models are offered in stainless steel or white coated.
N/A Constructed of tough polycarbonate material, this flush mounted cover helps protect smoke detectors from vandalism and damage.

Easy to install protective covers help assure smoke detectors will remain operational where vandalism and accidental damage are causing false fire alarms or high maintenance costs.

Polycarbonate models are offered in clear, black or white. Steel models are offered in stainless steel or white coated.
N/A Two models available: STI-8100 for flush mount and STI-8130 with a spacer for surface mount. They are offered in clear, black or white polycarbonate.

Easy to install protective covers help assure smoke detectors will remain operational where vandalism and accidental damage are causing false fire alarms or high maintenance costs.

Polycarbonate models are offered in clear, black or white. Steel models are offered in stainless steel or white coated.
N/A This heavy-duty, 1.2 mm stainless steel cover features a natural resistance to corrosion making it an excellent choice for applications where food is present as well as water treatment plants and correctional facilities. Available for flush mount (STI-8200-SS) or with a conduit spacer for surface mount (STI-8230-SS, shown) applications. Easy to install, it helps assure the smoke detector will remain operational where vandalism and accidental damage are causing false fire alarms or high maintenance costs.

Easy to install protective covers help assure smoke detectors will remain operational where vandalism and accidental damage are causing false fire alarms or high maintenance costs.

Polycarbonate models are offered in clear, black or white. Steel models are offered in stainless steel or white coated.
Model Type N/A Clear, Flush Mount Damage Stopper with Mounting Hardware N/A Black, Flush Mount Damage Stopper with Mounting Hardware N/A White, Flush Mount Damage Stopper with Mounting Hardware N/A Surface Mount Damage Stopper, STI-8100, STI-8101 Conduit Spacer and Mounting Hardware N/A Smoke Detector Damage Stopper Flush Mount, Stainless Steel
Overall Width N/A 8.25 in210 mm N/A 8.25 in210 mm N/A 8.25 in210 mm N/A 8.25 in210 mm N/A 9 in228 mm
Overall Height N/A 6 in152.3 mm N/A 6 in152.3 mm N/A 6 in152.3 mm N/A 6 in152.3 mm N/A 5 in127 mm
Spacer Height N/A 2 in51 mm
Cover Height N/A 3.75 in95 mm N/A 3.75 in95 mm N/A 3.75 in95 mm N/A 3.75 in95 mm N/A 3 in76 mm
Cover Thickness N/A N/A N/A N/A N/A 1.2 mm
Backplate Thickness N/A 0.25 in6.3 mm N/A 0.25 in6.3 mm N/A 0.25 in6.3 mm N/A 0.25 in6.3 mm N/A
Color N/A Clear N/A Black N/A White N/A N/A
Warranty1 N/A 3 y
Application N/A Polycarbonate Protection
General Information N/A
  • Covers protect against severe vandalism and accidental damage.
  • Helps assure smoke detectors will be operational when needed.
Design N/A
  • Aesthetically pleasing.
Construction N/A
  • Exceptional durability.
Installation N/A
  • Easy installation and easy removal for servicing detectors.
Options N/A Available conduit spacers allow them to be easily mounted over surface mount detectors with or without conduit
Choice of stainless steel, coated cold rolled steel or polycarbonate
Testing N/A STI-8100 models are UL Listed (No. S3504) for use with no sensitivity adjustment with the following smoke detectors:

Sentrol Smoke Detector Models 611UD , 612UD , 721UD and 731UD , System Sensor 2251, 2251T, 2251B, 2251TB, 2251TM, 2251TMB, 2251BR, 2551, 2551T, FTX-P1 Smoke Detectors, FCI Model ASD-PL, ASD-P, ASD-PH, ASD-PTL, ASD-FILTREX, ASD-FILTREXF, MCSACCLIMATE, ASD-PL2, ASD-PL2F, ASD-PTL2, ASD-PTL2F, MCDACCLIMATE2, MCS-ACCLIMATE2F, ASD-PL2FR, Secutron Model MRI-2251, Honeywell Model TC806B1001, Mircom Model MIX-2251, Intelligent Systems Model ISL 2251, Siemens detector head models PE-11, HFP-11, HFPO-11, SPF-11, SPFO-11 to be used with detector base model DB-11, and EST Model 2251F, all under 300 fpm.
N/A STI-8100 models are UL Listed (No. S3504) for use with no sensitivity adjustment with the following smoke detectors:

Sentrol Smoke Detector Models 611UD , 612UD , 721UD and 731UD , System Sensor 2251, 2251T, 2251B, 2251TB, 2251TM, 2251TMB, 2251BR, 2551, 2551T, FTX-P1 Smoke Detectors, FCI Model ASD-PL, ASD-P, ASD-PH, ASD-PTL, ASD-FILTREX, ASD-FILTREXF, MCSACCLIMATE, ASD-PL2, ASD-PL2F, ASD-PTL2, ASD-PTL2F, MCDACCLIMATE2, MCS-ACCLIMATE2F, ASD-PL2FR, Secutron Model MRI-2251, Honeywell Model TC806B1001, Mircom Model MIX-2251, Intelligent Systems Model ISL 2251, Siemens detector head models PE-11, HFP-11, HFPO-11, SPF-11, SPFO-11 to be used with detector base model DB-11, and EST Model 2251F, all under 300 fpm.
N/A STI-8100 models are UL Listed (No. S3504) for use with no sensitivity adjustment with the following smoke detectors:

Sentrol Smoke Detector Models 611UD , 612UD , 721UD and 731UD , System Sensor 2251, 2251T, 2251B, 2251TB, 2251TM, 2251TMB, 2251BR, 2551, 2551T, FTX-P1 Smoke Detectors, FCI Model ASD-PL, ASD-P, ASD-PH, ASD-PTL, ASD-FILTREX, ASD-FILTREXF, MCSACCLIMATE, ASD-PL2, ASD-PL2F, ASD-PTL2, ASD-PTL2F, MCDACCLIMATE2, MCS-ACCLIMATE2F, ASD-PL2FR, Secutron Model MRI-2251, Honeywell Model TC806B1001, Mircom Model MIX-2251, Intelligent Systems Model ISL 2251, Siemens detector head models PE-11, HFP-11, HFPO-11, SPF-11, SPFO-11 to be used with detector base model DB-11, and EST Model 2251F, all under 300 fpm.
N/A STI-8130 models are UL Listed (No. S3504) for use with no sensitivity adjustment with the following smoke detectors:

Sentrol Smoke Detector Models 611UD , 612UD , 721UD and 731UD , under 300 fpm.
N/A STI-8200 models are UL Listed (No. S3504) for use with no sensitivity adjustment with the following smoke detectors:

System Sensor 2251, 2251T, 2251B, 2251TB, 2251TM, 2251TMB, 2251BR, 2551, 2551T Smoke Detectors, FCI Model ASD-PL, ASD-P, ASD-PH, ASD-PTL, ASD-FILTREX, ASD-FILTREXF, MCSACCLIMATE, ASD-PL2, ASD-PL2F, ASD-PTL2, ASD-PTL2F, MCDACCLIMATE2, MCS-ACCLIMATE2F, ASD-PL2FR, Secutron Model MRI-2251, EST Model 2251F, Mircom Model MIX-2251, Intelligent Systems Model ISL 2251, and Honeywell Model TC806B1001.
Accessories N/A STI-8101 - Polycarbonate stackable 2" conduit spacer for use with STI-8100 (included with STI-8130)
STI-8171 - Mounting backplate for flush and surface mount models. Recommended for irregular and unstable mounting surfaces such as drop ceilings and beams
STI-8201-SS - Stainless steel spacer for conduit applications
STI-8201-W - Cold rolled steel spacer for conduit applications
KIT-81 - Tamper resistant screws, #8 x 2" snake eye (quantity 4) for use with STI-8100
KIT-82 - Tamper-proof stainless steel screws for flush mounted covers
KIT-19038 - Tamper bit for KIT-81 and KIT-82
N/A STI-8101 - Polycarbonate stackable 2" conduit spacer for use with STI-8100 (included with STI-8130)
STI-8171 - Mounting backplate for flush and surface mount models. Recommended for irregular and unstable mounting surfaces such as drop ceilings and beams
STI-8201-SS - Stainless steel spacer for conduit applications
STI-8201-W - Cold rolled steel spacer for conduit applications
KIT-81 - Tamper resistant screws, #8 x 2" snake eye (quantity 4) for use with STI-8100
KIT-82 - Tamper-proof stainless steel screws for flush mounted covers
KIT-19038 - Tamper bit for KIT-81 and KIT-82
N/A STI-8101 - Polycarbonate stackable 2" conduit spacer for use with STI-8100 (included with STI-8130)
STI-8171 - Mounting backplate for flush and surface mount models. Recommended for irregular and unstable mounting surfaces such as drop ceilings and beams
STI-8201-SS - Stainless steel spacer for conduit applications
STI-8201-W - Cold rolled steel spacer for conduit applications
KIT-81 - Tamper resistant screws, #8 x 2" snake eye (quantity 4) for use with STI-8100
KIT-82 - Tamper-proof stainless steel screws for flush mounted covers
KIT-19038 - Tamper bit for KIT-81 and KIT-82
N/A STI-8171 - Mounting backplate for flush and surface mount models. Recommended for irregular and unstable mounting surfaces such as drop ceilings and beams
STI-8201-SS - Stainless steel spacer for conduit applications
STI-8201-W - Cold rolled steel spacer for conduit applications
KIT-82 - Tamper-proof stainless steel screws for flush mounted covers
KIT-19038 - Tamper bit for KIT-82
N/A STI-8171 - Mounting backplate for flush and surface mount models. Recommended for irregular and unstable mounting surfaces such as drop ceilings and beams
STI-8201-SS - Stainless steel spacer for conduit applications
STI-8201-W - Cold rolled steel spacer for conduit applications
KIT-82 - Tamper-proof stainless steel screws for flush mounted covers
KIT-19038 - Tamper bit for KIT-82
Note N/A STI-8100 series covers are to be used at your own risk if mounted over a non UL Listed product. N/A STI-8100 series covers are to be used at your own risk if mounted over a non UL Listed product. N/A STI-8100 series covers are to be used at your own risk if mounted over a non UL Listed product. N/A N/A
  • 1 Three year guarantee against breakage in normal use.