Product CatalogueSports and OutdoorsWindsurfing OtherConstruction and Repair PartsChinook 10 inch Mast Box Vented With Screw Back Chinook Chinook 10 inch Mast Box Vented With Screw Product ID: 324407 Brand: Chinook 2025-05-02 From: $37.99 AUD View or buy the Construction and Repair Parts Windsurfing Other - Chinook 10 inch Mast Box Vented With Screw from Chinook to discover other options and shipping details. Description The first choice by quality board builders, 2 sizes 8 inch and 10 inch, built in vent screw Back to Windsurfing Other - Construction and Repair Parts More Construction and Repair Parts and others in our range Chinook Gor Tex Vent Valve Patrik 4-Hole Adjustable Foot Strap Inserts Chinook Slot Box Fin Box Chinook 10 inch Mast Box Vented With Screw Chinook Mast Track Box 10 inch Chinook Board Vent Retro Fit with slot Screw .625 inch Chinook 7-Hole Micro Adjustable Foot Strap Inserts Chinook 8 inch Mast Box Vented With Screw Patrik Vent Screw Insert 5 Hole Footstrap Inserts