Product CatalogueSports and OutdoorsWindsurfing OtherConstruction and Repair Parts8 inch Mast Track Box Back Surf Sail Australia 8 inch Mast Track Box Product ID: 594081 Brand: Surf Sail Australia 2026-01-14 From: $29.99 AUD View or buy the Construction and Repair Parts Windsurfing Other - 8 inch Mast Track Box from Surf Sail Australia to discover other options and shipping details. Description The first choice by quality board builders, 8 inch box Vent valve and vent screw not included. Recommeded use with "Surf Sail Australia Chromed Brass Vent Screw" Back to Windsurfing Other - Construction and Repair Parts More Construction and Repair Parts and others in our range Chinook Slot Box Fin Box 5 Hole Footstrap Inserts Chinook Footstrap Inserts 5 Hole Chinook Board Vent Retro Fit with Thumb Screw 5-8 inch Fin US Box 8 inch Chinook Fin Box 10 inch Chinook Tuttle Fin Box Chinook Board Vent With Slot 1 Inch Chinook Power Fin Box Chinook Gor Tex Vent Valve