Exterior View – Window Open Center-pivot roof window opened outward, showcasing its wide ventilation range and slim profile.
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26½ x 39, GGU FK04, Center-Pivot Roof Window

VELUX
SKU:
GGU FK04 0070
$789.00

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GGU FK04 Center-Pivot Roof Window with Laminated LowE3 Glass


Rough Opening: 26-1/2" x 39"

Add natural light and better airflow to attic spaces, lofts, and upper-floor rooms with the VELUX GGU FK04 center-pivot roof window. Its space-efficient top control bar makes operation effortless, even in tight areas.

  • Center-pivot hinge design allows easy opening, closing, and rotation for cleaning.

  • Laminated Low-E3 safety glass provides UV protection and includes a 10-year hail warranty.

  • Built-in ventilation flap allows fresh air flow, even when the window is closed.

  • White polyurethane frame resists moisture and blends into most interiors.

  • Requires roof pitch between 15° and 90° for proper installation; not suitable for flat roofs.

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VELUX GGU FK04 Center-Pivot Roof Window

Effortless Operation & Clean Design

Bring natural light and ventilation into smaller attic or loft spaces with the VELUX GGU FK04 Roof Window. Its top control bar and center-pivot design make it easy to operate, even in tight spaces, while the white polyurethane frame offers a low-maintenance finish that complements any room.

VELUX 10-Year Installation Warranty 

VELUX flashing is designed to perfectly integrate with VELUX skylights, creating a weathertight seal that protects your home from leaks and water damage.  By using VELUX-certified installers and genuine VELUX flashing, you can be confident that your skylight is installed correctly and to the highest standards.

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Key Features of the GGU FK04 Roof Window

  • Top Control Bar – Smooth center-pivot operation allows for easy opening, closing, and cleaning.
  • Laminated Low-E3 Glass – Safety glass reduces UV, improves insulation, and includes a 10-year hail warranty.
  • Moisture-Resistant Frame – White polyurethane finish resists humidity and blends with modern interiors.
  • Built-In Vent Flap – Allows fresh air in, even when the window is closed and locked.

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KEY BENEFITS

  • Fresh Air Anytime – Perfect for in-reach installation to increase air circulation and daylight.
  • Ideal for Compact Spaces – Suits smaller lofts, attic conversions, or upper bedrooms with sloped ceilings.
  • All-Weather Performance – Installs with tile or shingle flashing kits for a weathertight seal.
  • Low-Maintenance Finish – Durable, wipe-clean interior frame resists mold and mildew.

The GGU FK04 Center-Pivot Roof Window offers a practical, stylish solution for homeowners seeking daylight, airflow, and easy operation in smaller roof spaces.