8.5" Fin Box
The Fins Unlimited 8.5" Center Fin Box is the industry standard surfboard center fin box. The center fin box allows for the fixation of a removable fin for longboards, egg and bonzer shapes, or stand up paddleboards. This 8.5" center fin box is meant to be installed after the hotcoat of the build process or for use as a replacement for fin box repair.
Industry standard center fin box