what size do velux skylights come in

Velux Skylight Sizes: What's Available?

By Amanda MooreApril 16, 2026

When it comes to transforming your home's lighting and ventilation, Velux skylights are a popular choice. But with so many sizes available, it can be overwhelming to decide which one is right for your space. Let's explore the various Velux skylight sizes to help you make an informed decision.

Velux skylights are designed to fit a wide range of roof types and sizes. They come in two primary categories: fixed skylights and venting skylights. Fixed skylights are ideal for providing natural light without ventilation, while venting skylights offer both light and fresh air.

Fixed Velux Skylights

Fixed Velux skylights are perfect for areas where you want to maximize natural light but don't need ventilation. They are available in a range of sizes to suit different roof pitches and room sizes.

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Velux offers fixed skylights in sizes ranging from 14.5" x 22" to 57.5" x 39.5". The most common sizes are 22.5" x 39.5" and 39.5" x 39.5". These sizes are suitable for most residential applications and can be installed in both new construction and retrofit projects.

Standard Fixed Skylights

Standard fixed skylights are designed for roof pitches between 1.5:12 and 9:12. They are typically installed in new construction projects and come in sizes ranging from 14.5" x 22" to 57.5" x 39.5".

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Some popular standard fixed skylight sizes include:

22.5" x 39.5" (for roofs with pitches between 3:12 and 9:12)
39.5" x 39.5" (for roofs with pitches between 3:12 and 9:12)
57.5" x 39.5" (for roofs with pitches between 3:12 and 9:12)

Sun Tunnel Skylights

Sun tunnel skylights are designed for flat or low-pitched roofs. They are perfect for small spaces like closets, hallways, and bathrooms. Velux sun tunnels come in sizes ranging from 10" to 22".

Some popular sun tunnel skylight sizes include:

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10" (for small spaces like closets and bathrooms)
14" (for medium-sized spaces like hallways and small bedrooms)
22" (for larger spaces like kitchens and living rooms)

Venting Velux Skylights

Venting Velux skylights are ideal for spaces where you want both natural light and ventilation. They are available in a range of sizes to suit different roof pitches and room sizes.

Velux offers venting skylights in sizes ranging from 22" x 22" to 57.5" x 39.5". The most common sizes are 22.5" x 39.5" and 39.5" x 39.5". These sizes are suitable for most residential applications and can be installed in both new construction and retrofit projects.

Standard Venting Skylights

Standard venting skylights are designed for roof pitches between 1.5:12 and 9:12. They are typically installed in new construction projects and come in sizes ranging from 22" x 22" to 57.5" x 39.5".

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Some popular standard venting skylight sizes include:

22.5" x 39.5" (for roofs with pitches between 3:12 and 9:12)
39.5" x 39.5" (for roofs with pitches between 3:12 and 9:12)
57.5" x 39.5" (for roofs with pitches between 3:12 and 9:12)

Electric Venting Skylights

Electric venting skylights offer the convenience of remote-controlled operation. They are available in sizes ranging from 22" x 22" to 57.5" x 39.5". Velux offers both solar-powered and hardwired options for electric venting skylights.

Some popular electric venting skylight sizes include:

22.5" x 39.5" (for roofs with pitches between 3:12 and 9:12)
39.5" x 39.5" (for roofs with pitches between 3:12 and 9:12)
57.5" x 39.5" (for roofs with pitches between 3:12 and 9:12)

When choosing a Velux skylight size, consider the size of the room, the roof pitch, and your specific lighting and ventilation needs. It's always a good idea to consult with a professional installer to ensure the best fit for your space. With the right size and type of Velux skylight, you can transform your home's lighting and ventilation, creating a more comfortable and energy-efficient living space.