evo.com | Futures Fin Accessories > The Futures 3/4" Box Plug Filler is a must when you want to go with less fins than the number of boxes on your board - they fill in the hole, reduce drag, and let the board perform like it's designed to. Fits 3/4" fin boxes. ThermoTech Construction Ditch the traditional plastic feel of composite fins and upgrade to more consistent flex and nicer release through turns with Thermotech. Molded-resin with long-fiberglass matrix, this composite material fuses into a snappy and lightweight fin that retains the proper flex pattern for performance. | Futures 3/4 Box Filler Kit 2026 in White | Plastic