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.

Home Dome Rooflights and Flat Glass Rooflights Modular Rooflights Size Options

Size Options for Modular Rooflights

Check out the size overview of prefabricated 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

Modular Rooflights Monolight longitudinal section B

Monolight/Linearlight

Modular Rooflights Monolight and Linearlight cross-section bottom A

Linearlight

Modular Rooflights Linearlight longitudinal section B

There are different size options for Monolight, Linearlight and Circularlight, and you need to consider the following when choosing the correct size overview:

Monolight, Linearlight or Circularlight
Fixed, venting or walk-on modules
Double or triple glazing unit
Limitations on the features

Monolight – Made-to-measure

Monolight – Made-to-measure size grid

Symbol explanation

Monolight size grid explanations

Linearlight – Made-to-measure

LInearlight – Made-to-measure size grid

Symbol explanation

Linearlight size grid explanations

Circularlight – Made-to-measure

Ø between 900 and 1350 mm depending on module type

Circularlight made to measure size overview

Symbol explanation

Circularlight size grid explanation

Roller blinds – Made-to-measure

Overview sizes Roller blinds

Symbol explanation

Roller blinds size grid explanations

Configuration options

Modular Rooflights product overview – features and limitations

* Depends on snow and wind load - a static calculation must be performed