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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.
7. Grilles











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Rota-Jet Diffusers
For supply air, high capacity, rotating drum jet diffuser, providing 30° upward and downward adjustment of the airstream.
Adjustable Jet Nozzles
Usually fitted into sidewall applications to enable manual adjustment of air direction to suit customer requirements.
Two-way Narrowline Slot Diffusers
Fixed blade slot diffuser available with quick release core, ideal for fan coil units due to low pressure drop and short throws.