Rectangular Cross with Round Branch

The AD-KKO rectangular duct cross with circular branches is designed for connecting and branching ventilation systems from rectangular ducts to round air ducts. This fitting allows multiple duct connections while maintaining stable aerodynamic performance and system tightness.
The cross features flanged connections on rectangular ends and is reinforced with transverse corrugation of the steel sheet, providing high structural rigidity and resistance to deformation. The circular branches are manufactured as standard nipple connections and are symmetrically positioned, ensuring ease of installation and uniform air distribution.
The branch arrangement along side A is symmetrical. The product is suitable for industrial, commercial, and public ventilation systems.
Key dimensional limits include: ØD≤A−15; ØD1≤B−50; ØDmin and ØD1min=100 mm; Emin=D/2+30; E1min=D1/2+30.