Window Prices by Size

Find accurate pricing for windows based on standard dimensions. Compare costs across materials and styles.

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All Standard Window Sizes

Browse all standard window sizes and dimensions available in the UK market.

600mm Width Windows

SizeDimensionsBest ForCategoryView
600 × 900mm600 × 900mmBathroom, kitchenSmallView Prices

900mm Width Windows

SizeDimensionsBest ForCategoryView
900 × 1200mm900 × 1200mmBedroom, living roomMediumView Prices

1200mm Width Windows

SizeDimensionsBest ForCategoryView
1200 × 1200mm1200 × 1200mmLiving room, dining roomMediumView Prices

1500mm Width Windows

SizeDimensionsBest ForCategoryView
1500 × 1200mm1500 × 1200mmLarge living areasLargeView Prices

1800mm Width Windows

SizeDimensionsBest ForCategoryView
1800 × 1200mm1800 × 1200mmLarge living areasLargeView Prices

2100mm Width Windows

SizeDimensionsBest ForCategoryView
2100 × 1200mm2100 × 1200mmPanoramic viewsExtra LargeView Prices

Understanding Window Sizes

How window dimensions affect pricing and which sizes work best for different rooms

How Window Sizes are Measured

Window sizes are typically measured in millimeters (mm) and represent the overall frame dimensions, not just the glass area. The first number is the width, followed by the height.

For example, a 900 × 1200mm window is 900mm wide and 1200mm tall. When replacing windows, it's crucial to measure your existing opening accurately.

How Size Affects Price

Window pricing generally increases with size, but not always proportionally. Very small or very large windows may have premium pricing due to:

  • • Material costs increase with window area
  • • Larger windows require more robust frames
  • • Non-standard sizes often include custom manufacturing fees
  • • Very large windows may require special glass treatments for safety

Choosing the Right Size

Selecting the appropriate window size depends on:

  • • Room purpose and natural light requirements
  • • Wall space and structural limitations
  • • Building regulations and planning requirements
  • • Energy efficiency considerations
  • • Ventilation needs
  • • Budget constraints

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