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maintaining thermal insulation
mullions will be used
designed for round ventilation ducts
Diagonal impeller and stator
Single Blade Damper Wire Rope & Fixings maintaining thermal insulationManufactured from corrosion resistant galvanised steel as standard Complies with HVCA specification DW144 Suitable for high, medium, and low pressure systems Turning circular blade is stepless adjustable 0 90 Utilised for lower demands for shut off capacity Admits an insulation thickness of approximately 50 mm On occasion can be used for regulation
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