STI Bopper Stopper® Protective...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$23.90
STI Bopper Stopper® Protective Covers – Keypad, Lock, and Reader Guards

STI Bopper Stopper® Protective Covers – Keypad, Lock, and Reader Guards

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Model: STI-6518

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

$23.90
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STI Bopper Stopper® Protective Covers – Keypad, Lock, and Reader Guards

The STI Bopper Stopper® Series is a line of rugged polycarbonate covers designed to shield keypads, push buttons, pull stations, biometric readers, and electrical devices from vandalism and accidental damage. Available in multiple sizes and finishes (clear or smoke), these cost-effective enclosures are ideal for protecting essential controls in public, commercial, and industrial settings. Each unit features a stainless steel torsion spring or continuous hinge to maintain closure, and includes installation hardware and gaskets for quick setup. ADA compliant (STI-6518) and backed by a three-year guarantee against polycarbonate breakage under normal use.

Key Features:

  • Tough polycarbonate construction withstands impact and abuse
  • Protects keypads, pull stations, outlets, controls, and more
  • Stainless steel spring keeps cover securely closed (select models)
  • Easy to install with included mounting hardware and gasket
  • Available in clear or smoke finish
  • Temperature range: -40°F to 250°F (-40°C to 121°C)
  • ADA Compliant (STI-6518 only)
  • UL/cUL & CSFM listed (STI-6518 only)
  • Three-year warranty against breakage

 

Model H W D
STI-6518 6.40 in. 4.16 in. 2.03 in.
STI-6520-C
STI-6520-S		 8.5 in. 4.18 in. 3.12 in.
STI-6521-C
STI-6521-S		 8.3 in. 4.18 in. 3.12 in.
STI-6522-C
STI-6522-S		 5.5 in. 4.18 in. 3.12 in.
STI-6529 6.57 in. 5.43 in. 2.67 in.

C = Clear
S = Smoke

Manufacturer Resources

VIEW SPEC SHEET

Product Specs

Included Accessories:
Mounting Hardware and Gasket
Product Line:
STI Bopper Stopper®
Warranty:
Three-Year Guarantee Against Breakage (Normal Use)
Applications:
Protects keypads, push buttons, pull stations, outlets, biometric readers
Certifications:
UL/cUL S2466 (STI-6518 only), ADA Compliant (STI-6518), CSFM Approved (STI-6518)
Operating Temperature:
-40°F to 250°F (-40°C to 121°C)
Hinge Type:
Stainless Steel Torsion Spring or Continuous Hinge (model dependent)
Product Group:
Safety
Product Subgroup:
Protective Covers
Product Type:
Bopper Stopper® Protective Covers – Keypad, Lock, and Reader Guards
Product Finish:
Clear, Smoke
Department:
Safety
Installation Options:
Surface Mount (includes hardware and gasket)
Product Material:
Polycarbonate

Parts & Accessories

    Safety Technology International STI-6518 – Frequently Asked Questions

    How fast can I get the Safety Technology International STI-6518 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-6518 come with a warranty?
    Absolutely. The Safety Technology International STI-6518 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-6518?
    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-6518 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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