This is a 2 inch Diameter Dual flared port tube . This ia a very high quality port tube and is extremely easy to install . Both sides have a large radius flare optimum for high velocity airflow. This port is a good choice for

Center channel and mid sized tower speaker enlosures.

Features:

1. High Quality ABS built.
2. Diamond Polishing on the Die Core gives this port a smooth high gloss finish on the inside.
3. Cutout : 116 mm
4. Total Length = 155 mm
5. Effective work length = 135 mm ( After subtracting outside and inside air contact area).
6. Ideal for Center Channel Speakers and mid sized tower speakers.
7. 2.0 inch port diameter.