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SB1216S is one type of tunnel subbox
size:550mm*200mm(upper bottom)310mm(lower bottom)*370mmoutside coverd with grey color carpet
thickness of the board:18mm(high end)front side 30mm
speaker perforate dimension:282mm
NW:10.2kgs
GW:12.5kgs
Vas:1.922ft.
12 inch singel enclosure