Product CatalogueSports and OutdoorsWindsurfing OtherBits and PiecesK4 Fins Slot Box Box Blanker 90mm Back K4Fins K4 Fins Slot Box Box Blanker 90mm Product ID: 992748 Brand: K4Fins 2025-07-31 From: $8.95 AUD View or buy the Bits and Pieces Windsurfing Other - K4 Fins Slot Box Box Blanker 90mm from K4Fins to discover other options and shipping details. Description Blanks off Slot Box when not in use 90mm long 9 mm wide 25mm deep Back to Windsurfing Other - Bits and Pieces More Bits and Pieces and others in our range Streamlined Quick Connect Deck Plate Chinook Vent Slot Screw Streamlined Mast Extension Adjustable Collar And Pin Patrik Power Box Box Blanker Ezzy Roller Cam Surf Sail Australia Mini Tuttle Plastic Cover Patrik GC Tekcam Reduced Cambers Chinook Adjustable Collar And Pin For SDM Extension Surf Sail Australia Vent Screw O Ring 10 pack Chinook Powerhaul Pulley And Cleat System