Used to connect rectangular and circular ducts.
When a and b < 800, then l = 300 mm
When a or b ≥ 800, then l = 500 mm
For connection the reducer rectangular end is provided with flanges height 30 mm.
When a and b < 800, then l = 300 mm
When a or b ≥ 800, then l = 500 mm
For connection the reducer rectangular end is provided with flanges height 30 mm.
