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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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LOW LEAKAGE INSULATED DAMPERS
This damper gives a low air leakage rate of below 5m³/hr/m² and an insulation value of 1.8 watts/m²/°c. The linkage is enclosed.
FULLY SEALED SLIMLINE DUCT DAMPERS
The blades are extruded aluminium airfoil section with pvc seals and stainless steel side seals.
HEAVY DUTY DUCT DAMPERS
For control and balancing of supply and extract air systems where high pressures and velocities may be experienced.