10.75" US fin box by Futures fins (27,31cm).
 
The "top" longboard box, for your malibus and longboards, from 8'0". For longboards and single fin boards or 2+1 combination.
 
Measures:
Length: 27,31cm
Outside width: 2,1cm
Outaside width including flange : 4,00cm
Internal width / base of drift: 0,9cm
Depth, to take into account for the minimal thickness of the shape: 2,3cm.
 
Colours:
Black
White