Size Options

Check out the size grids of prefabricated VELUX Modular Rooflights, which come in three variants: Monolight, Linearlight and Circularlight.

How to measure the modules 

The clear internal measure is determined by the interior dimensions of the 90° lining of the product: A (Length – slope direction) and B (Width)

Monolight

Clear internal measurement of monolight
Monolight/Linearlight

The clear internal measure of the product lining for monolight/linearlight
Linearlight
The clear internal measure of the product lining for linearlight
Clear Internal
A = Clear internal module length
B = Clear internal module width
There are different size options for Monolight, Linearlight and Circularlight, and you need to consider the following when choosing the correct size grid:

Monolight – Made-to-measure

Monolight – Made-to-measure size grid
Symbol explanation 

Color for fixed modules  Modular Rooflights - Fixed modules Fixed modules

Color for venting modules Modular Rooflights - venting modules double/triple glazing Venting modules – Double glazing

Color for venting modules-triple glazing  Modular Rooflights - venting modules double/triple glazing Venting modules – Triple glazing

Color for walk-on modules Modular Rooflights - Walk-on modules Walk-on modules

Linearlight - Made-to-measure

Linearlight – Made-to-measure size grid
Symbol explanation 

Color for fixed modules linearlight  Modular Rooflights - linearlight - fixed modules Fixed modules

Color for venting modules linearlight - double glazing Modular Rooflights - linearlight - venting modules - double glazing Venting modules – Double glazing

Color for venting modules linearlight - triple glazing  Modular Rooflights - linearlight - venting modules - triple glazing Venting modules – Triple glazing

Circularlight – Made-to-measure

Ø between 900 and 1350 mm depending on module type
Circularlight made to measure size grid
Symbol explanation 

Colour for modular rooflights - circular  Modular Rooflights - circular Circularlight modules - Sizes between: Ø 900 – 1350 mm

Product overview – features and limitations

Modular rooflight product overview – features and limitations
* Depends on snow and wind load - use static calculator