Sectional door with a 3-layer window sections

The NASSAU Energy Sectional Door combines optimal insulation values, large inflow of light and a revolutionary design all within one door. An innovation solution that reduces the consumption of energy without compromising on functionality and quality.

Designed in consideration to the intensified demand for low insulation values (U-value), the new NASSAU Energy window sections are a patented solution built from an aluminium frame construction with a triple-glazed window solution. The outside glass is mounted directly on the aluminium frame and gives an exclusive and aesthetic design that offers great harmony in the total appearance of the door.

Furthermore, the construction ensures that the aluminium frame is not in direct contact with outside temperatures, which reduces the cold transmission through the door significantly.

The NASSAU Energy Sectional Door can be supplied in a range of colours, please see the full colour chart here

The NASSAU Energy Sectional Door can be supplied with a variety of different track systems depending on the nature of the installation and the space availability, please see the full track systems here


The NASSAU Energy consists of a foamed 9000F bottom and top section and all middle sections can be supplied as either Energy sections or a combination of Energy and 9000F foamed sections.

It can be supplied up to 5000mm in width and 6175mm in height.

NASSAU energy in white surrounded by metal walls
NASSAU energy sectional door in white colour white walls


The NASSAU 9000F Sectional Door panels are one of the best insulated on the market. The door leaf is constructed with broken thermal bridges in the form that ensures that outside temperatures will not be transported through the door leaf and into the building. The combination of highly insulated polyurethane foam and effective broken thermal bridges gives outstanding insulating values.

INSULATION PROPERTIES –  Each door is fully tested, certified and compliant with all current building regulations and a door specific U Value is available upon request



industrial door workshop example

Service station

Nassau energy white colour with white walls


NASSAU energy in white surrounded by metal walls


New patented section type of a 44mm patented aluminium frame with a triple-glazed filling of 4mm scratch resistant acrylic (SAN) outside, 3mm standard acrylic (SAN) in the middle and 3mm scratch resistant standard acrylic (SAN) inside.

The aluminium frame is hidden in the construction and is not visible from the outside.


The NASSAU Energy Sectional Door is equipped with strong sealing strips which protect against wind and rainwater from the outside. The top seal is fitted on the top section and all other sections are equipped with a sealing strip. the bottom section is equipped with a rubber profile with internal and external lipseals. The vertical tracks are also equipped with a side sealing strip that secures strong tightness.

NASSAU energy sectional door for car workshop example gallery