Product CatalogueSports and OutdoorsWindsurfing OtherConstruction and Repair PartsChinook Power Fin Box Back Chinook Chinook Power Fin Box Product ID: 306 Brand: Chinook 2026-11-27 From: $41.99 AUD View or buy the Construction and Repair Parts Windsurfing Other - Chinook Power Fin Box from Chinook to discover other options and shipping details. Description The first choice by quality board builders. Power Box 1 bolt, box cut to size/shape at deck level Back to Windsurfing Other - Construction and Repair Parts More Construction and Repair Parts and others in our range Fin US Box 8 inch Chinook Fin Box 8 inch Chinook Board Vent With Thumb Screw 1 Inch Chinook 7-Hole Micro Adjustable Foot Strap Inserts Chinook 8 inch Mast Box Vented w screw 8 inch Mast Track Box Chinook 5-Hole Micro Adjustable Foot Strap Inserts Chinook Board Vent Retro Fit with Thumb Screw 5-8 inch 5 Hole Footstrap Inserts Chinook Board Vent Retro Fit with slot Screw .625 inch