Core size: 242mm * 330mm * 36mm ( 9.5″ * 13″ * 1.4″ ), Overall Size: 302mm * 226mm ( 11.9″ * 8.9″ ), Inlet/Outlet Size: 11mm / 11mm ( 0.4″ 0.4″ ), Rows: 2; Note: Please check the pictures and dimensions carefully before purchase;