Place of Origin : Guangzhou,China
TDC (Transverse Duct Connector) system: a separate flange install onto the ductwork.
TDC flange
-- Size: 20 mm / 30 mm / 40 mm; 25 mm / 35 mm
-- Thickness: 0.7 mm ~ 1.2 mm (18~24Gauge)
-- Available in zinc coating: 80g/m² - 275 g/m² (G25-G90)
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