Core size approx: 540 mm*440 mm*56 mm, Overall Size approx: W660 mm*H480 (including top and bottem brackets) mm*66 mm, Inlet/Outlet : 35mm/38 mm; Note: the inlet and outlet are straight not in an angle, and the bottom mounting pins center to center distance is 454 mm. The top inlet is 35mm, please check your original one as it maybe need to be 38mm