Square and Rectangle port flares 1ST SIDE SIZE:8" -3 alternator pulley caps in

-3 alternator pulley caps in your choice of colors( please select your pulley type from our listings of pulley covers and email us which pulley type you have)

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BACK TO BACK CONFIGURATION WITHOUT COMPRESSION

if you have a 4"x6" port with a port area of 24 square inches

Square and Rectangle port flares 1ST SIDE SIZE:8" -3 alternator pulley caps inSquare and Rectangle port flares. These are Made to be used with your self made playwood or mdf rectangle or square port tubes that have 3 4" walls, or at least the last 1" of the tube. The sizes listed are the inside dimensions of the port flare opening and have a 1" radius on the corners and the flare has a 1. 5" full radius on the opening. Outside dimensions can be calculated by adding 4. 25" to the port opening, for example, a 4"x6" port will have