The EPS core of a high volume board is affected by extreme temperature changes. To prevent air pressure build-up we’ve installed a two-way GORE™ Protective Vent on the top deck of the larger Foilboards. This allows air to pass in and out of the board, while preventing water from entering. The vent is factory-fitted and does ... not require any adjustment.
product code: 85008.210072
download the user manual here