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STI 6521 Bopper Stopper for Keyless Lock, Smoke Color
STI 6521 Bopper Stopper for Keyless Lock, Smoke Color

STI 6521 Bopper Stopper for Keyless Lock, Smoke Color

Manufacturer Part#:STI-6521-S
Our Part#:STI-6521-S
Stock Status: Call for Availability
Retail Price:$34.47
Your Savings:$9.64(28%)
Your Price:$24.83









Feature 5



  • Protects against vandalism and accidental damage.
  • Fast and easy installation.
  • Cover is molded from thick smoke color polycarbonate material.
  • Stainless steel torsion spring maintains cover in a closed position.
  • Comes complete with mounting hardware and gasket.
  • Versatile cover protects push button units, smaller pull stations, keypads, electrical outlets and shutdown switches.
  • Cover is UV-stabilized.
  • Gasket replacement recommended after five years.
  • ADA Compliant.
  • Polycarbonate rated -40ºF to 120ºF (-40ºC to 49ºC).
  • Lifetime guarantee against breakage in normal use.
  • 94V-2 flammability rating.


Bopper Stopper cover helps protect everything from electrical outlets to push buttons. Inexpensive and highly durable, this hinged cover lives up to its name for a wide range of applications. Can take hard knocks in stride while protecting digital keypads, electrical outlets, smaller size pull stations and push buttons to name just a few. Both the cover and hinge is molded of polycarbonate material while the hinge springs are formed from stainless steel. Comes complete with installation screws and gasket.

Bopper Stopper is backed by a lifetime guarantee against breakage and damage in normal use. Cost effective and easy to install.

5 Stars
Home owner
I purchased the keyless lock Bopper Stopper in May for an outside remote gate operator keypad. I had to do some minor modifications to the Bopper but the net result was a fashionable, aesthetic, and functional keypad cover which shields from rain, sun, and all else. I've received rave reviews from the gate installer, other workers, and neighbors alike. Highly recommend this assembly for most any function. Its sound and an excellent design. I'll likely purchase another just to "have" as a backup.
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Reviewed by:  from Chicago Park CA. on 12/9/2015
5 Stars
STi 6521
I purchased the 6521 to cover the automatic gate opener at the entry of our property. Though it was not made for this specific purpose, with a few small modifications, and a form-fit backing, it was mounted to a metal goose-neck with the gate opener inside the cover. It is VERY attractive and adds much aesthetic value to our entry. Be sure you are mechanically inclined and understand what will be required to make modifications without damage to the unit.
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Reviewed by:  from Grass Valley, CA. on 5/18/2015

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