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  • Available in solar powered or hardwired electric versions.
  • An ideal solution for flat roof applications where the skylights are hard to reach.
  • Infinity glass top surface, up to 16% greater glazing area compared to competitive offerings.
  • Suitable for roofs with pitches between 2-15° degrees.
  • Innovative glazing unit featuring leading edge design.
  • Available with two glazing units: DU6 (triple-glazed) and DU8 (quadruple-glazed). Both are hermetically sealed units.
  • Excellent thermal insulation parameters for the entire quadruple glazed (DU8) skylight with an R-Value of 8.9. Triple glazed (DU6) skylights have an R-Value of 8.1.
  • Perfect solution for energy efficient passive buildings.
    Sound value: 38 dB for DU6 and 37 dB for DU8.
  • Can be used with roofing products such as TPO, PVC, EPDM single ply or torched down membranes.
  • Blackout (ARF-D) blinds are available.
  • Economical P2 (Temp/Lam) double glazing models are also available on special orders.

Highlights of the DEF – (Solar or Electric) Venting Deck Mounted Skylights for Flat Roofs

Solar Powered Roof Window
Solar Powered
  • The DEF Solar Venting flat roof skylights are powered by an integrated solar panel. Not needing to be hard wired into your home’s electrical system and reducing your energy bill.
  • Positioned at the bottom of the skylight for optimal solar collection, improved appearance, and safe and secure operation.
  • Also available in hardwired electric version.
Roof Window Rain Sensor
Responds to a Single Drop of Water
  • The DEF flat roof skylight includes an integrated rain sensor that automatically closes the skylight at the first sign of rain.
  • So, you never have to worry about your skylight when you are away from home or the office and it unexpectedly starts to rain.
Zrh12 Z-Wave Feature
Smart Home & Remote Control Technology
  • Control your FVS skylights as a stand alone or multi unit system using the included ZRH12 remote control.
  • The remote controls up to 12 separate groups with up to 12 skylights per group (144 total).
  • A wall keypad, ZRW7, is also available, operating up to 7 separate groups with up to 12 skylights per group (84 total).


Four Fakro Drf Flat Roof Skylights
Infinity Edge Glass Skylight
  • The elegant design of seamless, edge to edge Infinity glass. Up to 16% greater glazing area compared to competitive offerings. Create a striking architectural feature, ideal when the skylight can be seen from above.
  • Buildings with flat roofs often exclude natural light skylights and miss out on the benefits, but the DEF has been specifically designed for flat roofs.
Dmf Roof Window Energy Efficient Cross Section
Energy Efficient
  • The DEF delivers excellent thermal insulation with the state of the art DU8 quadruple gazed unit. The DU8 skylight’s R-value is 8.9. The triple glazed (DU6) option has an R-value of 8.1.
  • DEF, DMF & DXF skylights are manufactured with outstanding thermal frame insulation.
  • More economical DEG, DMG, DXG-P2 (Temp/Laminated) double glazed version also available by special order.
Dxw Sound Insulation
Superior Sound Insulation
  • A quiet calm home environment is essential to modern families. The DEF provides outstanding sound insulation from it’s state of the art glazing.
  • A quiet working environment is critical to many modern businesses, dramatically improving productivity, allowing employees a quiet place to concentrate, talk and think.
  • The DEF flat roof window featuring a double chamber DU6 glazing has been tested for sound insulation during heavy rain. The result, LIA= 36 [dB]*, confirms the high level of resistance against sound penetration making the skylight ideal for sound reduction.
Fakro Drf Skylight Grass Roof
Green Roof Installation with Additional XRD/W Base
  • Flat roof glass skylights can also be mounted on an additional XRD/W base with a height of 5⅞” for installation on green or living roofs.
    Fakro Drf Xrd Base
  • 2 XRD bases can be installed on top of each other for applications requiring additional height, such as a ‘green’ roof.
    See installation instructions.

Fakro Drf Skylight Dimensions

Dxw Sleek Design
Sleek Architectural Design
  • FAKRO’s flat roof skylights are designed to be a dramatic, sleek and modern architectural feature. Utilizing the latest technology and material to advance their design.
  • Create an architectural ‘wow’ factor that will get noticed. The design compliments the aesthetic style of modern architects and designers.
  • The FAKRO flat roof skylight series (triple and double glazed) can be installed individually, in a row, or in a group. Discuss the necessary structural requirements with your architect and engineer.

FAKRO’s Premium DU6 & DU8 Glazing Unit

Du6 Glazing High Energy Efficient Benefits

More economical D_G-P2 (Temp/Laminated) version also available by special order.

Du8 Glazing Passive Energy Benefits

The Features of FAKRO’s Laminated Glass

FAKRO offers laminated glass on all its skylights and roof windows. FAKRO uses a number of different configurations of glazing based on the requirements of the skylight or roof window, this includes double, triple and now Canada’s first quadruple glass unit. Laminated glass has many benefits.
Sound reduction airplane
Superior Sound Reduction

Reduces the effects of sound by up to 30% compared to standard double pane glass, and up to 50% less than a acrylic skylight. Bring natural light in without additional noise such as traffic or planes.

Hammer resistant security glass
Additional Security

Laminated glass is more difficult to break and penetrate. So, if you are concerned about security it is worth considering. The vinyl interlayer holds the glass together in case of breakage.

Uv protected glass
Best in class UV Protection

Laminated glass lets the light in but protects your home from UV rays. The ideal choice to prevent fading of your floors, furniture and artwork.

Increased Safety
Increased Safety

Laminated glass provides additional safety. Even when broken it does not shatter because the two inner layers of glass are bonded to a thin plastic membrane.

Many building codes require laminated glass for out of reach applications.

Sizes For DEF – (Solar or Electric) Venting Flat Roof Deck Mounted Skylight

Size Chart – Summary

Def Size Chart Summary Metric En
Def Size Chart Summary Imperial En

Pinch to enlarge.

Technical Information

Each model comes with a downloadable information package to help you select, specify, and install our product. If you do not find what you need, don’t hesitate to call our Columbia Customer Service Team at 604 437 3377 (Toll Free: 888 437 5557) or email

Size Chart
Download Size Chart Cta
Download a PDF of the size chart for this model as reference.

The size chart is in Imperial and Metric.
FAKRO Installation Instruction Cta
Use FAKRO’s installation instructions to ensure a successful installation.

Download the instructions for this model, or if you need multiple models go to the Installation Instruction Library page.
Drawings &
Drawings And Specs Cta
Download a 3D Drawing (.dwg CAD file), BIM Model (.rfa), and Cross Sections as .dwg and PDF.

Product Specifications as a Word Doc or PDF.

For multiple models go to the Drawings & Specification Library page.
Light Filtering &
Blackout Blinds
Light Filtering And Blackout Blinds Cta
FAKRO produces an extensive range of high quality light filtering and blackout blinds in a range of designer fabrics and colours.

Designed to complement any interior designer’s vision.

FAKRO Radio Control System (DEF)

  • FAKRO DEF skylights are equipped with the industry standard Z-Wave Smart Home radio technology. Z-Wave is one of the most widely used wireless broadcasting systems, so our products easily integrate with your Smart Home systems.
  • Z-Wave is well supported, being constantly improved and updated to adjust to changing technology, removing the risk of a proprietary system offered by competitive manufacturers that may lack the support necessary to keep it up to date.
  • Alternatively, the skylight can be operated without being connected to a Smart Home Hub, with the included ZRH 12 Remote Control controlling the skylight directly.
  • The Z-Wave technology links all compatible Smart Home Hubs and devices into a single network: skylights and blinds, lighting, thermostats, alarms, computers, telephones, and air conditioning. Integrating with popular Smart Home systems such as Samsung SmartThings, Wink, Nest, Alexa, and Apple HomeKit.
  • Z-Wave is easy to install, expand, and manage, saving you time and money, while maximizing usability. Z-Wave eliminates unnecessary control units and wiring between electronic devices. Ideal for new builds, renovations or adding to an existing system.

Your Smart Home Solution – Control Your FAKRO Smart Skylight (DEF) Using Your Z-Wave Smart Home System

All FAKRO DEF flat roof solar and electric venting skylights are equipped with a Z-Wave radio control system, allowing for easy Smart Home system integration.

An easy 3 step process:

  1. Purchase or use existing Smart Home Hub with Z-Wave compatibility.
  2. Install and connect FAKRO skylights to your Z-Wave network.
  1. Your skylights are now part of your Smart Home network. Control your FAKRO skylights through a variety of devices.
Fakro z wave skylight mobile devices

Control Your FAKRO Skylight (DEF) Using Our Remote Control or Keyboard

  • Control your DEF skylights as a stand alone or multi unit system using the included ZRH12 remote control.
  • The remote controls up to 12 separate groups with up to 12 skylights per group (144 total).
  • A wall keyboard is available, ZRW7, operating up to 7 separate groups with up to 12 skylights per group (84 total).
Fakro z wave skylight remote

Watch the FAKRO Product Video

DEF Product Video

Watch the FAKRO Installation video

DEF Installation Video