Box Fillers are designed to be placed into empty fin boxes when not in use. This most commonly occurs when riding a 5-Fin setup as either a thruster or quad, since all 5 boxes are not utilized at the same time.

– Qty (2) Box fillers per package

• 1/2″ Box fillers fit Futures center fin and quad rear fin boxes
• 3/4″ Box fillers fit Futures front side fin boxes of a thruster, quad, 5-fin or 2+1 set-up