High quality flared port tube reduces port turbulence and looks like a million bucks. Perfect for tuning high-performance compact bookshelf & standmount speakers. 

Ports are a press-fit and can be trimmed to desired length. Mounting requires a 2 1/2" cabinet opening. 

Great for 5 1/4" or smaller woofers. larger woofers should use a larger diameter port. See the port length calculator at the Precision Sound Products site here: http://www.psp-inc.com/tools.html - use the "straight length port" measurement for these ports & add 1/4" to that because of the flare. See our other listings for the premium Precision Sound flared ports