STI Steel Web Stoppers – Wire ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$33.02
STI Steel Web Stoppers – Wire Guards for Smoke Detector Protection

STI Steel Web Stoppers – Wire Guards for Smoke Detector Protection

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Model: STI-9601
$33.02

In Stock (leaves warehouse same day if ordered before 3pm ET)

$33.02
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STI Steel Web Stoppers – Wire Guards for Smoke Detector Protection

STI Steel Web Stoppers are durable wire guards designed to prevent vandalism and accidental damage to smoke detectors in controlled environments. Featuring a patented web-like design and constructed from 9-gauge coated steel or 304 stainless steel, these guards are UL listed and compatible with most standard and high-profile smoke detectors. With quick installation and easy removal for maintenance, they are ideal for schools, hospitals, correctional facilities, and public buildings.

Key Features

  • Material Options: 9-gauge Coated Steel or 304 Stainless Steel
  • Mounting: Flush or Surface Mount
  • Compatible Detectors: Low-profile, high-profile, and mini/photoelectric smoke detectors
  • Certifications: UL S3504, UL268, CSFM, MEA
  • Temperature Rating: -40°F to 212°F
  • Tamper Resistance: Optional tamperproof kit (KIT-82)
  • Optional Accessories: STI-8170 backplate, KIT-19038 spanner tool
  • Design: Octagonal, patented web-style for impact resistance
  • Use Case: Indoor environments like schools, hospitals, correctional facilities
  • Warranty: 3-Year Guarantee Against Breakage

Manufacturer Resources

VIEW SPEC SHEET

Product Specs

Accessories:
STI-8170 Mounting Backplate, KIT-19038 Spanner Tool
Certifications:
UL S3504, UL268, CSFM 7300-1416:0100, MEA 49-00-E
Compatible Detectors:
Low-profile, High-profile, Mini, Photoelectric
Environment:
Indoor controlled environments only
Installation:
Quick installation and easy removal for servicing
Product Line:
STI Steel Web Stoppers
Tamper Resistance:
Optional tamperproof hardware (KIT-82)
Warranty:
3-Year Guarantee Against Breakage in Normal Use
Operating Temperature:
-40°F to 212°F (-40°C to 100°C)
Product Group:
Safety
Product Subgroup:
Protective Covers
Product Type:
Steel Web Stoppers – Wire Guards for Smoke Detector Protection
Department:
Safety
Product Design:
Octagonal web-like wire guard for impact resistance
Installation Options:
Flush Mount, Surface Mount
Product Material:
9-Gauge Coated Steel, 304 Stainless Steel

Parts & Accessories

    Safety Technology International STI-9601 – Frequently Asked Questions

    1) Which STI Steel Web Stopper do I order for a low-profile smoke detector versus a high-profile one?
    Steel Web Stoppers are ordered by detector profile: low profile, high profile, mini, or photoelectric. Match the guard to the head you actually have on the ceiling, because the cage depth is what clears the detector body. Each of those four profiles is offered in 9-gauge coated steel or 304 stainless, and in flush or surface mount, so a full order is three choices: profile, material, mount.
    2) What is the difference between flush mount and surface mount on an STI wire smoke detector guard?
    Flush mount is for a detector sitting directly against a finished ceiling; the guard base lands flat on that surface. Surface mount is the one to order when the detector sits on a box or raised base and the guard has to clear it. Both are offered across all four detector profiles and in both materials, coated steel and 304 stainless. If the detector is on a conduit-fed box, look at the STI-8171 mounting backplate to give the guard a solid base to land on.
    3) Coated steel or 304 stainless Steel Web Stopper for a shower room or kitchen?
    Go 304 stainless where there is moisture, washdown, or cleaning chemicals; the 9-gauge coated steel version is the standard pick for dry corridors, classrooms, and dayrooms. Note that Steel Web Stoppers are rated for indoor controlled environments only, so neither material is an exterior or unconditioned-space guard. Both materials cover all four detector profiles and both mount styles.
    4) Can I put an STI Steel Web Stopper on a smoke detector in an unheated parking garage or loading dock?
    No. Steel Web Stoppers are specified for indoor controlled environments only, even though the guard itself carries an operating range of -40F to 212F (-40C to 100C). The temperature rating tells you the steel and coating hold up across that range; it is not an approval for exterior or wet locations. For an outdoor or exposed detector you want a sealed environmental cover, not a wire web guard.
    5) Will a wire guard over a smoke detector affect the detector's UL listing or fail inspection?
    Steel Web Stoppers are listed under UL S3504 and UL268, and carry CSFM 7300-1416:0100 and MEA 49-00-E approvals. UL268 is the smoke detector standard, which is the point a fire marshal cares about: the guard has been evaluated so it does not obstruct smoke entry to the detector. The CSFM and MEA numbers are the California State Fire Marshal and New York City approvals, which is what gets asked for on institutional and municipal jobs.
    6) How do I stop residents from pulling the smoke detector guard off the ceiling?
    Order the KIT-82 tamperproof hardware with the guard. Standard fasteners come off with common tools, which is not enough in a correctional dayroom, a behavioral health unit, or a group home. KIT-82 swaps in tamper-resistant screws, and the KIT-19038 spanner tool is the bit that drives them, so buy at least one per crew or the guards cannot be serviced later.
    7) Is a wire web guard or a solid polycarbonate cover better for protecting a smoke detector?
    A wire guard like the Steel Web Stopper is the indoor vandalism answer: the octagonal patented web design takes impact from thrown objects, ball strikes, and deliberate abuse while leaving the detector open to airflow. It is specified for indoor controlled environments only. A solid cover is what you use when you also need to keep out dust, moisture, or weather, and that is a different product. For a school corridor, a hospital unit, or a correctional dayroom, the steel web is the type you want.
    8) Can I standardize one STI Steel Web Stopper part across every smoke detector in my building?
    Usually not one part, but a short list. The Steel Web Stopper line covers low-profile, high-profile, mini, and photoelectric detector heads, and most buildings carry a mix, especially after phased detector replacements. Walk the building and count heads by profile, then standardize the material and mount within each profile, coated steel for dry areas, 304 stainless for wet ones. That gets a facility down to two or three stock numbers instead of a dozen.
    How fast can I get the Safety Technology International STI-9601 delivered?
    Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
    Can I return it if it doesn’t work for me?
    Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
    Does the Safety Technology International STI-9601 come with a warranty?
    Absolutely. The Safety Technology International STI-9601 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
    How do I get technical support or installation help for the Safety Technology International STI-9601?
    You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
    Why buy the Safety Technology International STI-9601 from ZenSupply?
    ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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