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VELUX GPU CK04 Top Hinged Roof Window. Perfect for rooms with limited space, this model offers both panoramic views and efficient ventilation. Its innovative design ensures easy operation and enhanced energy efficiency.

  • Dimensions: 21 5/8″ x 38 1/2″
  • Easy Operation: Bottom handle
  • Energy Efficient: ThermoTechnology™
  • Ventilation Flap: Fresh air entry
  • Easy Cleaning: Rotatable sash
  • Customizable: Wide range of accessories
  • Ideal for: Small spaces, low ceilings
Downloadable PDF Files

Upgrade Your Skylights

Upgrade Your Skylights

Flashing Kits

Flashing Kits

Install a Velux flashing kit with your skylight and get a 10 year no leak warranty.*

Install a Velux flashing kit with your skylight and get a 10 year no leak warranty.*

Velux Curb Mounted Skylight Flashing

Shingle, Shake & Slate Roofs

Tile Roof Skylight Flashing

Tile Roofs

Velux Curb Mounted Skylight Flashing

Shingle, Shake & Slate Roofs

Tile Roof Skylight Flashing

Tile Roofs

Solar Skylight Shades

Solar Skylight Shades

Add solar powered shades to your skylights to qualify for the solar tax credit.  Shade upgrades include remote control. Having your shades factory installed now will save you $100 compared to an installation kit.

Add solar powered shades to your skylights to qualify for the solar tax credit.  Shade upgrades include remote control. Having your shades factory installed now will save you $100 compared to an installation kit.

Light Filtering White Skylight Shades

Light Filtering - White

Light Filtering Sand Skylight Shades

Light Filtering - Classic Sand

Room Darkening White Skylight Shades

Room Darkening - White

Room Darkening Beige Skylight Shades

Room Darkening - Beige

Light Filtering White Skylight Shades

Light Filtering - White

Light Filtering Sand Skylight Shades

Light Filtering - Classic Sand

Room Darkening White Skylight Shades

Room Darkening - White

Room Darkening Beige Skylight Shades

Room Darkening - Beige

Velux GPU CK04 Top Hinged Roof Window

$976.00

Lead Time: approximately 7 to 10 business days

Authorized Velux Distributor
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Velux GPU CK04 Top Hinged Roof Window Product Details

VELUX GPU CK04 Top Hinged Roof Window

Discover the charm of the VELUX GPU CK04, a compact yet efficient top hinged roof window designed for spaces that crave natural light and fresh air. Measuring 21 5/8″ x 38 1/2″ with a practical rough opening of 22 1/8″ x 39″, this model fits snugly in smaller rooms. The CK04 offers the ease of a convenient bottom handle, ensuring smooth operation even in tight spaces.

Ideal for low ceiling areas or where maximizing your view is a priority, the CK04 transforms any room. It comes equipped with VELUX ThermoTechnology™, ensuring superior energy efficiency and insulation. The top control bar is not just for opening; it’s a gateway to fresh, filtered air, thanks to the innovative ventilation flap.

Maintenance is a breeze. Rotate the sash 180 degrees for easy cleaning and replace the air filter with ease. Enhance your CK04 with a variety of VELUX accessories, choosing from an array of shades to match your style.

The CK04, part of the VELUX GPU series, is your solution for bringing in the beauty of the sky into smaller spaces, offering panoramic views and a brighter, airier environment.

Compatible Products

How to Measure a Curb Mounted Skylight

Velux Curb Mounted Skylights

  • Clean exterior profile provides natural light without obstructing roofline.
  • For flat roof installations or roofs with up to a 60 degree pitch
  • Seamlessly pairs with VELUX skylight shades for optimal light control
  • Flashing kit required for 10 Year No Leak Warranty
  • Eligible for Federal Solar Tax Credit with the addition of Solar Shades

Shop For Curb Mounted Skylights by Functionality Type

Velux Curb Mounted Skylights

The No Leak Skylight

Three Patented Layers of Water Protection

  1. Pre-attached gasket provides a tight seal for leak proof installation.

  2. Adhesive underlayment for secondary leak protection in the harshest weather environments.

  3. Skylight flashing specifically engineered for easy installation and primary water protection.