4000mm x 4000mm Made to Measure Glass Flat Roof Window Lantern

Our 4000mm x 4000mm Square Gazebo Style Roof Lantern is an impressive made-to-measure flat roof window light with four equal-sized sides, creating a large symmetrical gazebo-style feature for flat roof extensions and other substantial spaces.

At 4 metres square internally, this is one of our larger roof lanterns and is ideal for bringing natural daylight into large kitchens, dining areas, garden rooms, conservatories and open-plan living spaces.

Complete 4000mm x 4000mm Roof Lantern

The lantern is supplied as a complete roof system, including the window frames, roof structure, guttering, your choice of glass or polycarbonate roofing and a decorative finial.

• Internal Frame Size: 4000mm x 4000mm
• Design: Square gazebo style with four equal sides
• Manufacture: Made to measure
• Window Frames: Included
• Roof Guttering: Included
• Roof: Choice of glass glazing or polycarbonate
• Decorative Finial: Included

4000mm x 4000mm Internal Frame Size

Important: The stated 4000mm x 4000mm size is the internal frame measurement. The overall external dimensions are larger once the window profiles and cill are included.

The window profiles are approximately 70mm wide. Allowing 70mm on each side gives an approximate overall external frame size of:

4140mm x 4140mm external frame size.

The cill is approximately 160mm wide. Allowing 160mm on each side gives an approximate overall external cill size of:

4320mm x 4320mm external cill size.

4000mm x 4000mm Roof Lantern Dimensions

• Internal Frame Size: 4000mm x 4000mm
• Approx. External Frame Size: 4140mm x 4140mm
• Approx. External Cill Size: 4320mm x 4320mm

Large Square Gazebo Style Roof Lantern

The four equal-sized sides create the distinctive square gazebo-style design. With an internal size of 4000mm x 4000mm, this substantial lantern creates a dramatic architectural feature while introducing a large amount of natural daylight from above.

It is particularly suited to larger rooms where daylight needs to reach the centre of the space and conventional windows and doors alone may not provide sufficient natural light.

Important Information About the Roof Design

Please note: The roof lantern shown in the product photographs may be the smaller 1000mm x 1000mm version.

Larger lanterns require different roof configurations to provide the necessary structural support. The roof design and number of roof sections used on this 4000mm x 4000mm lantern will therefore differ from the smaller lantern shown.

Glass or Polycarbonate Roof Options

The roof can be supplied with a choice of glass glazing or polycarbonate roofing, allowing you to select the most suitable option for your project.

Glass provides an attractive glazed appearance with excellent natural daylight, while polycarbonate offers a lightweight and practical alternative.

Ideal for Large Flat Roof Extensions

The generous 4000mm x 4000mm roof lantern is particularly suitable for larger residential and commercial spaces, including:

• Large Kitchen Extensions
• Kitchen-Diners
• Open-Plan Living Areas
• Dining Rooms
• Garden Rooms
• Conservatories
• Large Flat Roof Extensions
• Commercial & Hospitality Spaces

Made to Measure Glass Flat Roof Window Light

Our square gazebo roof lanterns combine traditional styling with the convenience of a complete made-to-measure roof system. The windows, roof structure, guttering, glass or polycarbonate roofing and decorative finial are supplied together to create the finished lantern.

Important: Please carefully check the internal frame, external frame and external cill dimensions before constructing the roof opening, kerb or supporting structure.