Stackable Louvres

Robust, durable and high-quality stackable louvres can be tailored to suit all architectural requirements.

Stackable Louvres

Robust, durable and high-quality stackable louvres can be tailored to suit all architectural requirements.

Stackable Louvres

Robust, durable and high-quality stackable louvres can be tailored to suit all architectural requirements.

The Sunray Stackable Louvre is a unique interlocking, stackable louvre system which provides a full range of aesthetically pleasing ventilation solutions to meet all major energy providers / architects’ specifications and requirements. Bespoke and custom designs, including arch, curved or any tailored specific requirements to suit a variety of structural openings. The Stackable Louvre can also incorporate cable access solutions.

Robust, durable and high-quality stackable louvres can be tailored to suit all architectural requirements / designs and meet customer ventilation demands. Designed and approved for numerous business sectors including, utilities, commercial and industrial applications.

  • Excellent airflow characteristics.
  • Aesthetically pleasing.
  • No visible horizontal joints.
  • Unlimited height of assembly subject to structural restrictions.
  • Manageable Light weight sections up to 2500mm in length and 250mm in height.
  • Complements Sunray Louvre doors range.
  • Anti-vermin mesh or blanking to rear.
  • Strong fully welded construction.
  • Rear concealed joining framework.
  • Choice of frame profiles demountable or fully welded (dependant on size).
  • Top panel can be fixed through front face if rear space is restricted or internal access is not available.
  • Non-fire rated.
  • Architectural marine grade polyester powder coat finishes as standard.

Sizes

Unlimited in height and width dependant on sub-structure/ fixing points.

Louvre Section

Louvre blades welded into a 50mm x 18mm x 3mm steel angle section framing. Louvre blades formed to profile shown. Standard blade thickness is 2.5mm. Pitch is 50mm.

Frame

100 x 50 x 3mm rectangular hollow section to sides, sides plus head or all four sides. Lugs or through frame fixing options available for framework, (fixings supplied). All welded/fully demountable construction. Alternative frame profiles available. Hinge parts welded to frame and door leaf.

Air flow

Approximately 50%.

Fixing Method

Louvre frames second fixed within structural openings using M10 expansion anchors to masonry/concrete openings or M10 machine screws to drilled and tapped holes in steelwork. Frame to wall joints sealed with mastic sealant.

Finishes

Top coat: Architectural marine grade polyester powder coat. 30% gloss level. 60-80 microns thickness. Optional marine grade zinc rich primer for enhanced corrosion resistance. 60-80 microns thickness. Stocked range of 58 standard colours. Other colours and finishes available on request.

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The only approved supplier for Louvre Doors & Systems

Sunray are the only supplier accredited in the UKPN EAS 07-0000a database to provide louvre doors and systems to UK Power Networks (UKPN),

Trusted by over 11 DNOs & IDNOs

We are one of the few UK suppliers trusted by over 11 Distribution Network Operators (DNOs) and Independent Distribution Network Operators (IDNOs) to deliver compliant, high-security door solutions for critical infrastructure.

The leading, compliance-first supplier

Sunray are proud to be one of the few UK companies that hold ISO 9001, ISO 14001 and ISO 45001

The only approved supplier for Louvre Doors & Systems

Sunray are the only supplier accredited in the UKPN EAS 07-0000a database to provide louvre doors and systems to UK Power Networks (UKPN),

Trusted by over 11 DNOs & IDNOs

We are one of the few UK suppliers trusted by over 11 Distribution Network Operators (DNOs) and Independent Distribution Network Operators (IDNOs) to deliver compliant, high-security door solutions for critical infrastructure.

The leading, compliance-first supplier

Sunray are proud to be one of the few UK companies that hold ISO 9001, ISO 14001 and ISO 45001

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UKPN Doors - Trusted Supplier with Exclusive Louvre Systems Accreditation

Sunray Engineering stands as a trusted supplier of UKPN doors and holds the exclusive distinction of being the only UK manufacturer accredited to provide louvre systems to UK Power Networks. Following our recent addition to the UKPN EAS 07-0000a database for security doors, we now offer comprehensive door solution coverage across UK Power Networks' extensive distribution network, from our industry-leading Excludoor security doors for primary substation and grid infrastructure applications to our exclusive louvre systems for specialised ventilation management.

This strategic expansion of our UKPN accreditation, combined with our comprehensive range of power network doors, establishes Sunray as the preferred single-source supplier for complete security solutions across England's largest electricity distribution network. Our deep understanding of UKPN's exacting specifications, reinforced by over 70 years of engineering excellence, ensures that every UK Power Network door and louvre system we manufacture meets the stringent security, durability, and compliance requirements essential for protecting critical electrical infrastructure.

The complexity of modern power network doors and louvre systems demands a supplier with intimate knowledge of UKPN's operational requirements and regulatory framework. Sunray's proven track record in delivering steel security doors, exemplified by our groundbreaking FireLock® range which achieves an exceptional 240-minute fire rating whilst maintaining full 34.2 kPa blast resistance capability, combined with our exclusive louvre systems accreditation, reflects our comprehensive ability to meet the technical specifications outlined in UKPN's equipment approval standards. This breakthrough achievement demonstrates how advanced engineering can deliver integrated protection solutions that address multiple simultaneous threats whilst maintaining operational integrity.

Our UKPN doors and exclusive louvre systems are engineered to address the specific challenges faced by electricity distribution networks, including electromagnetic compatibility, physical security threats, and environmental resilience. The rigorous assessment process that led to our inclusion in the EAS 07-0000a database validates our engineering excellence and reinforces our commitment to meeting the exacting technical specifications demanded by utility-grade security applications. Our exclusive louvre systems accreditation demonstrates UKPN's confidence in our ability to meet their most specialised ventilation and security requirements, whilst our FireLock® technology sets new benchmarks for critical infrastructure protection.

The trust placed in Sunray by UK Power Networks extends beyond product supply to encompass comprehensive project support, technical consultation, and ongoing compliance assurance. Our dedicated team works closely with UKPN project managers to ensure seamless integration of our power network doors and louvre systems into new installations and infrastructure upgrades. Our digital asset management system provides complete traceability and maintenance records throughout the product lifecycle, supporting the complex operational requirements of critical electrical infrastructure where extended protection windows and reliable performance are essential for national infrastructure resilience objectives.

As one of the select few suppliers trusted by over 11 DNOs and IDNOs across the UK, our expanded UKPN accreditation underscores our position as the compliance-first choice for network operators requiring absolute certainty in their security infrastructure investments, delivering proven solutions that exceed industry expectations whilst maintaining operational efficiency.

June 26, 2025

Sunray Engineering Expands UKPN Accreditation with Security Doors Database Addition

Sunray Engineering achieves strategic expansion of UKPN accreditation, adding security doors to complement exclusive louvre systems provision for comprehensive critical infrastructure protection

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June 23, 2025

FireLock® Steel Doors Achieve Groundbreaking 240-Minute Fire Rating with Blast Protection

Sunray Engineering's FireLock® steel door range successfully passes rigorous EN 1634-1 fire testing whilst maintaining 34.2 kPa blast resistance, setting new benchmarks for critical infrastructure protection in utility and power generation facilities.

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June 23, 2025

The Critical Importance of Supplier Accreditation for UKPN, DNO and IDNO Door Solutions

This article explores why proper supplier accreditation for UKPN, DNO and IDNO door solutions is non-negotiable, what risks arise when working with non-accredited suppliers, and how to verify that your chosen supplier genuinely meets the exacting standards required.

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Enquire about the 
Stackable Louvres
 range

If you require any further technical information / support, click on the Product Data sheet above, or if you require a quotation, please complete the enquiry form or email sales at sales@sunraydoors.co.uk

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