The described adapter is a fitting used to convert a round pipe with a diameter of 125mm into a rectangular dimension of 220x90mm, and back to a round diameter of 125mm with a 90° angle.

• Usage: It is used in ventilation, air conditioning, or duct systems to connect different types of pipes or ducts.
• Material: It is typically made of plastic.
• Durability: Designed for durability and suitable for installation in systems exposed to heavy use.
• Compatibility: Ensure that the dimensions of the adapter precisely match the dimensions of the pipes or ducts.
• Round diameter: 125mm (φ125)
• Rectangular dimension: 220x90mm
• Angle: 90°