12" Four Spoke Subwoofer Frame

Spider Landings:

• Top Spider landing:   8"  (203mm)
• Second Spider Landing:  7.5"  (190.5mm)
• Third Spider Landing:  6.5"  (165mm)
• Bottom Spider Landing:  6"  (152mm)

Bolt Pattern:  4.33"  (110mm)  x 6  

Basket Voice Coil Opening: 3.42"  (86.86mm)