Original Fins Unlimited US Size 10.5" (26.7 cm) Fin Box.
Inflatable SUP US Fin Box with PVC Patch | Green Water Sports
Amazon.com: 4.6" US box center fin Safety Flex Soft replacement for longboard SUP Stand up Paddleboard River Surf Whitewater airSUP AIR7 Skeg with optional 'No-Tool' Fin Screw (Black (no screw included)) :
saruSURF 9" SUP Classic Fin | Green Water Sports
airSUP US box fins - Fins
Select Progression Freeride Fin US Box
US FIN BOXES for surfboards - VIRAL Surf for shapers - VIRAL SURF
K4 Fins Scorcher US Box
Fins found on a Red Equipment UK Inflatable SUP
Fiberglass Surfboard Fins | Longboard Surfboard Fins | Longboard Fin Us Box Sup - Surfing Accessories - Aliexpress