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HVAC ductwork symbols

HVAC ductwork symbols
HVAC ductwork symbols, vertical duct, variable bend, duct, transitioning, reducing, duct, supply, duct, straight duct, sliding damper, return, duct, offset, transitioning, reducing, duct, miter bend, duct, junction, duct, flexible, connection, damper, branch duct, beveled junction, duct, Y junction, duct, VAV box, variable air volume box, 3 way junction, three way junction, duct,