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GDL is a privately owned manufacturer and supplier of a large range of louvre systems, air diffusers, grilles, natural ventilation systems, brise soleil and dampers. From our head office in Glossop, Derbyshire and manufacturing facility in Sheffield,

GDL has serviced the built environment industry for over 30 years working with designers, architects and contractors across

the UK and overseas.


GDL offers a vast wealth of experience in technical, manufacturing and product development fields, ensuring our customers

are supplied with the choice of products most suited to their requirements. Our comprehensive regional sales representation

across the UK and Ireland offers a wealth of expertise and knowledge across our entire product range.

We are committed to maintaining both the best quality products in the industry whilst maintaining the highest levels of customer satisfaction. GDL continue to uphold quality and environmental management systems that are certified to ISO 9001, 14001
and 18001 respectively.  

Meet the team


Tom Callaghan


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Phil Callaghan



Laura Henderson

Marketing Manager

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Debbie Kuczaj

Sales Director

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