2″ Diameter Cardboard Port Tube 8″ long with Flared, Plastic end cap
2″ inner dia. port tube. The plastic flare end is made by SB Acoustics. The straight portion of the port is sturdy cardboard. SB used these in the cabinets they built for companies like Joseph Acoustics and Revel.
Limited supply
- 2″ inner dia x 8″ L
- 2.77″ flange dia
- 79mm (3-3/32″) outer flare dia.
- 73mm (2-27/32″) cut out
- The only drawback for this nice port system is the small mounting flange diameter. about 1/8″. The ability to make a precise hole is mandatory.



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