Exhaust valve, 89 mm (3.5") diameter, open, pressure-controlled, stainless steel

What’s Included:
- Flap control ø 89 mm (3.5") open, pressure-controlled exhaust flap, stainless steel

Description:
- The flap is open and closes when there is negative pressure
- Inner diameter ø 100 mm
- Outer diameter ø 86 mm
- Made of stainless steel
- Adjustable

Suitable for:
- Exhaust systems with a diameter of 89 mm