Xtralite and Vitral are now a part of VELUX Commercial, and we are delighted to welcome you to our new website. Here, you will find our complete portfolio of daylight solutions and services for industrial, commercial and public buildings.

Size Options for Modular Rooflights

Check out the size overview 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 or lining profile of the product: A (Length – slope direction) and B (Width)

Clear Internal
A = Clear internal module length
B = Clear internal module width

Monolight

Internal measurement of Monolight

Monolight Burglary-resistant

Clear internal measurement of Monolight Burglary-resistant

Monolight/Linearlight

The clear internal measure of the product lining for Linearlight

Monolight/Linearlight Burglary-resistant

Clear Internal Measurement Monolight/Linearlight Burglary-resistant

Linearlight

The clear internal measure of the product lining for Linearlight

Linearlight Burglary-resistant

The clear internal measure of the product lining for Linearlight Burglary-resistant
There are different size options for Monolight, Linearlight and Circularlight, and you need to consider the following when choosing the correct size overview:

Monolight – Made-to-measure

Monolight – Made-to-measure size overview
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 overview
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 overview
Symbol explanation 

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

Roller blinds – Made-to-measure

Overview sizes Roller blinds
Symbol explanation 

Light blue  Roller blind RMR Side to side direction

Dark blue Roller blind RMR  Top to bottom direction

Configuration options

Modular rooflight product overview – configuration options
* Depends on snow and wind load - a static calculation must be performed