California Legal - Yes, Case Material - Stainless Steel, Inlet Size - 2 Inch, Inlet Attachment - Slip-Fit, Outlet Size - 2 Inch, Outlet Attachment - Slip-Fit, Shape - Oval, Body Length (IN) - 9 Inch, Overall Length (IN) - 13 Inch, Substrate Material - Ceramic, Heat Shield - Yes, Air Tube - No