Kair Elbow Bend Adaptor 110mm x 54mm to 100mm 4 inch Rectangular Round 90 Degree Adapter for Converting Different Size Plastic Ducting Systems Female

RECTANGULAR END: 110mm x 54mm Fits over rectangular duct pipe. ROUND END: 100mm (4 inch) Fits over other connectors and fittings. Allows you to convert between 100mm round and 110mm x 54mm rectangular ducting systems. 90 Degree elbow bend adaptors allows you to run duct inside ceiling voids or other areas where space is restricted. Compatible with Kair plastic ducting range of fittings, outlets, and grilles., Weight: 0.18 pounds, Manufacturer: Kair