Reducers are used to connect ducts of different sizes.
When a and b < 800, then l = 300 mm
When a or b ≥ 800, then l = 500 mm
For connection the reducer is provided with flanges height 30 mm.
When a or b ≥ 800, then l = 500 mm
For connection the reducer is provided with flanges height 30 mm.
