Core Size (in) approx: 430 mm*560 mm*56 mm (17″*22″*2.2″), Overall size: 440 mm*690 mm*140 mm (17.3″*27″*5.5″), Inlet/Outlet size: 38 mm /50 mm (1.5″/2″), 5 rows; Note:Please check the pictures and dimensions carefully before purchase;