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THE GUARDIAN

Window Opening Control Device

Introducing the Guardian Limit Device – proudly designed and rigorously tested in Canada to meet the highest standards. Engineered for ultimate performance, this innovative device offers effortless installation, ensuring consistent and reliable relatching every time. Experience effortless protection with the Guardian Limit Device—no installation charts, complex routing, or specialized tools required—delivering uncompromised safety and quality in one simple solution.Always Ready, Always Secured !

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  • Compliant with ASTM-F2090-21 standards

  • Requires two consecutive actions to be fully disengaged

  • Disengaging the device is intuitive and does not require any special accessories, tools or knowledge

  • Ensures a maximum opening of 4’’ (From initial installation to the end of the product’s life)

  • Maintains a strength of over 75 lbs throughout the product's lifespan

  • A smooth and effortless automatic reset to its original position even before the window is fully closed

  • Can be installed in both 11-13mm (7/16-1/2) and 16-17mm (5/8-17/64) standard hinge cavities​

  • Incorporated leniency accommodating sash sag of up to 1/8 inch

  • Fully concealed when device is disengaged or when window is in the closed position

  • Easy installation at the factory or in the field with consistent positioning; no special installation tools or procedures needed

  • Engineered to minimize interference with weatherstripping and other window components

  • Innovative dual-piece design eliminates any risk of arm bending

  • Proudly designed and tested in Canada

  • Made of sturdy 304 austenitic stainless steel for extended durability

Homeowner in need of a replacement ?

Order replacement  parts through , our authorized end user retailer...

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