Product CatalogueSports and OutdoorsWindsurfing OtherConstruction and Repair PartsChinook Power Fin Box Back Chinook Chinook Power Fin Box Product ID: 306 Brand: Chinook 2026-10-12 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 8 inch Mast Track Box Chinook Footstrap Inserts 2 Hole Chinook 10 inch Mast Box Vented With Screw Chinook 3-Hole Micro Adjustable Foot Strap Inserts Patrik 4-Hole Adjustable Foot Strap Inserts Chinook Board Vent Retro Fit with Thumb Screw 5-8 inch Chinook Mast Track Box 10 inch Chinook Board Vent With Thumb Screw 1 Inch Fin US Box 8 inch Chinook Slot Box Fin Box