82mm x 100mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box Vent Push Button Switch Boxes [U Shaped Steel Shackle] -

[U Shaped Steel Shackle] - 38mm(1-1/2-inch) shackle internal height and 20mm(25/32-inch) shackle internal width

head with polished surface for longevity

Tape Width : 4mm/6mm/12mm

14" (L*W*H)

U Bolt Size: 62mm x 24mm x 3

82mm x 100mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box Vent Push Button Switch Boxes [U Shaped Steel Shackle] -Features: Speaker Port Tube is used to improve the bass response of many types of speakers. There are plenty of types to help you with your vented box design, and carries tubes of every shape and size, including adjustable length ports and flared ports. These port tubes are a reliable, convenient installation, while at the same time providing a finished, "pro" look to your bass reflex speaker building project. Normal tubes suffer from nasty turbulence