Extendable Window Bars | 3 Round Bars | 900-1650mm Wide x 340mm High (B) - Commercial, Residential, Window Bars, Windows - Black DIY XPANDA

Extendable Window Bars NZ

Protect vulnerable windows with strong extendable steel window bars designed for straightforward DIY installation.

  • Extendable design fits many NZ window sizes
  • Straightforward DIY installation
  • Strong steel construction
  • Fast NZ-wide delivery
  • From $54 (Updated 2026 pricing)

Choose Your Window Bars

Select based on your window width and required coverage.

Extendable Window Bars 3 Round 900-1650mm (B) - Commercial, Residential, Window Bars, Windows - Black DIY XPANDA

Why Choose DIY Xpanda Window Bars

  • Trusted Across NZ Homes
  • Fast NZ Delivery
  • DIY Installation Using Basic Tools
  • Strong Steel Construction

Find The Right Extendable Window Bars

Measure your window frame and compare recommended options.

Extendable Window Bars

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Frame Measurement
(Inside Window / Door Frame)




Best Fit Option

Click "Check Options" to view recommended window bar types and quantities for maximum coverage.

Best Value Option

Click "Check Options" to see the best value option with the fewest window bars that would fit into your window.

Why Extendable Window Bars?

Extendable window bars allow one product range to fit different window sizes.

Expandable Window Bars
Extendable Window Bars Size Comparison
Variants Expandable Heights Fixed Widths Spaces Among Bars Bar Diameters Bar Type Price Suitable For
Type A Min: 485mm
Max: 900mm		 340mm 120mm Outer: 16mm
Inner: 12mm		 3 round bars $54 Best suited for smaller windows (485–900mm)
Type B (BLACK) Min: 900mm
Max: 1650mm		 340mm 120mm Outer: 16mm
Inner: 12mm		 3 round bars $81 Best suited for smaller windows (900–1650mm)
Type C (BLACK) Min: 630mm
Max: 1100mm		 300mm 100mm Outer: 20mm
Inner: 15.88mm		 3 square bars $66 Compact square bars for standard windows
Type D Min: 630mm
Max: 1100mm		 420mm 100mm Outer: 20mm
Inner: 15.88mm		 4 square bars $99 Greater coverage and protection
Type E Min: 630mm
Max: 1100mm		 540mm 100mm Outer: 20mm
Inner: 15.88mm		 5 square bars $108 Maximum coverage within the range
Expandable Window Bars Installation Example

Benefits:

  • Flexible sizing
  • Easier product selection
  • Straightforward installation
  • Practical protection for homes and rentals
  • Extendable design fits a wide range of NZ window sizes