Installation Instructions

When to use these Window Security Bars

  • Window security bars are suitable for use in residential and commercial properties.
  • They can be used to secure ground level and basement windows as well as vulnerable upper-level windows.
  • They provide an added layer of security against break-ins, burglaries, and vandalism.
  • Window security bars are especially useful in high-crime areas or when the property will be unoccupied for an extended period.
  • They can also be used in conjunction with other security measures such as alarm systems, motion detectors, and security cameras.


Window Security Bars – Expandable (Adjustable)

GST Included

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$91.00$132.00 Inc, GST


Features for Window Security Bars:

  • Steel Construction
  • Sill Fit Only
  • Expandable to different lengths
  • Easy to Install 
  • Round Bars
  • Black or White
  • 1 Year Warranty


Affordable and Expandable Window Security Bars by Tuff Security

Tuff Security offers expandable window security bars that are constructed from round steel bars and tubing, providing affordable and reliable security for your property.

Easily Adjustable to Fit Your Windows

Our window bars are expandable and can be adjusted to fit windows of varying sizes. Just choose multiple units to fill your window measurements, and enjoy the peace of mind knowing that your property is secure.

Multiple Sizes and Options

We offer multiple sizes of window bars to fit different window sizes, with 3 bar, 4 bar, and 5 bar options available in our Square Bar burglar bar product section. All our window bars are made from steel to provide our customers with the strongest possible material, ensuring that their property, family, and colleagues are protected.






  • Steel construction window security bars
  • 2 size options both 340mm width – suits window opening up to a 530mm
  • Extends Min’ 485mm – Max’ 900mm
  • Extends Min’ 901mm – Max’ 1650mm
  • Outer steel pipe: 15.88mm diameter
  • Distance between each bar 120mm
  • Inner steel solid bar: 12mm diameter for stronger security
  • 25mm x 5mm Flat bar fixing, to keep integrity and solidity of the bars
  • Electro galvanised burglar bars and epoxy coated, applied to keep your bars rust free
  • We have two colours available being black or white
  • Fixings included
  • Can be installed vertically and horizontally
  • Suitable for indoor installation only
  • Cut down your window bars to suit smaller openings
  • Looking for window bars that can be face fitted as well as sill fitted, try here.


Expandable and Adjustable Window Security Bars

Tuff Security takes great care in crafting our expandable window security bars. We use round steel bars and tubing to provide our customers with an affordable and reliable solution to secure their property. You can select multiple units to fill your window measurements without any gaps or vulnerabilities, ensuring complete security for your property.

Multiple Sizes Available

Our Square Bar burglar bars products section includes multiple options to fit windows of various sizes, including 3 bar, 4 bar, and 5 bar. At Tuff Security, we understand that windows come in different sizes, and we strive to offer our customers a range of options that meet their specific needs.

Made from Strong and Durable Materials

We choose steel for all of our window bars to ensure our customers receive the strongest possible security. Our customers require dependable protection, and our bars deliver just that. We often receive compliments regarding the quality and ease of installation of our bars. The installation process is straightforward, even for DIY beginners.



Additional information

Weight N/A
Dimensions N/A



485mm to 900mm, 900mm to 1650mm

No. of Bars

3 Bars, 4 Bars, 5 Bars

Bar Profile

Round Tubes, Square Tube


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