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The Model TGF is a flexible VELUX Sun Tunnel Skylight® that is designed for shingle or shake roofs. It can be installed quickly around attic obstructions, making it the easiest tubular product to install in the industry. For installation on Southern exposures only.
Available in 14" and 21" diameters.

Replaces or reduces the need for artificial lighting. Featured is an industry first adjustable pitch adapter to maximize daylight collection during all daylight hours at all times of the year. |
- Highly flexible tunnel
The TGF flexible Sun Tunnel Skylight features a ring with a mirror finish just below the dome to reflect light from all angles. The flexible design of the tunnel makes the Model TGF the easiest tubular product to bend around attic obstructions and great for sunny areas.
- Low profile metal flashing
The TGF features an innovative one-piece low profile metal flashing that is parallel and blends into roofline.
- Ceiling frame
The TGF comes with a pre-assembled ceiling ring and paintable ceiling trim ring to complete any look.
- Integrated flashing system
The standard Model TGF Sun Tunnel is designed for low profile roofing materials such as shingles and shakes. Tile flashing is also available for the 21" unit.
- Installation slope
The TGF VELUX Sun Tunnel Skylight installs on roofs with slopes between 15° (3:12) and 60° (20:12).
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Highly flexible tunnel The flexible design makes this model the easiest tubular product to bend around attic obstructions and great for sunny areas. |

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Optional light kit available The ZTL 114 Electric Light Kit allows your SUN TUNNEL to be a source of illumination at night as well as during the day. Read more |
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ENERGY STAR®
The TGF Sun Tunnel skylight meets ENERGY STAR guidelines for most Canadian regions. |
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Warranties you can trust Comes with a ten year warranty against manufacturer's defect, rust corrosion and deterioration. Details
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Product details
Tunnel length The standard TGF Sun Tunnel Skylight kit contains 8' of tunnel for size 014 and 6' of tunnel for size 021.
Dome Domes are available in standard acrylic or high-impact polycarbonate for hurricane prone areas.
Dual diffuser TGF Sun Tunnel Skylight features a dual diffuser that reduces the chance of condensation and increases energy efficiency while providing even light distribution through a frosted diffuser.
Quick and easy installation Installation of the TGF Sun Tunnel Skylight is quick, easy and can be completed in just two hours with only basic carpentry skills required.
Warranties you can trust The TGF Sun Tunnel Skylight comes with a ten year warranty against manufacturer's defect, rust corrosion and deterioration.
Available sizes
The TGF Sun Tunnel Skylight comes in a 14" size for 16" center framing. For more details on the available sizes, please download a copy of our Residential product sizes. Due to local sales tax, transportation and delivery costs that may vary, please consult your local VELUX dealer for pricing.
Optional light kit available The ZTL 114 and ZTZ 122 Electric Light Kit allows your Sun Tunnel to be a source of illumination at night as well as during the day. This kit installs in minutes inside the tunnel just above the diffuser.