VELUX SUN TUNNEL skylights are designed to provide natural light into corridors, stairwells, bathrooms and cupboards, under pitched roofs, where installation of a skylight or roof window is not possible.

The VELUX flexible tunnels provide installation flexibility. Flexible tunnels can be used when the distance between the roof and the ceiling is too small or too great for a straight – or rigid – tunnel. 

A VELUX SUN TUNNEL skylight is easy to install, regardless of your roof type.

Different designs to match your roof style

Flexigle TGF

Low Profile TGF

Product features:
  • Low profile flashing provides an integrated look with the roof line.
  • Pivoting tunnel system and flexible tunnel for a quick and easy installation.
  • Impact models available for hurricane prone areas.
Flexible TMF

Pitched TMF

Product features:
  • Pitched flashing provides optimum angle for gathering light from all roof directions.
  • Tile flashing available.
  • Impact models available for hurricane prone areas.
Sun Tunnel flexible pivoting

Pivoting tunnel system

The adjustable pitch adapter makes tunnel installation easier and enables more light to be captured.
Sun Tunnel flexi-loc

Flexi Loc™ system

A tunnel connection system that reduces tunnel installation time in half and highly reflective tunnels that deliver the highest quality daylight into the space below.

Diffuser options

Diffuser frosted


Diffuser prismatic


Diffuser fresnel