Description Kohler Class 5 Dry Tank-to-Bowl Gasket (4.4 inch x 3.2 inch) (111mm x 81mm) 111mm x 81mm 4.4 inch Outer Diameter x 3.2 inch Inner Diameter 3.9 inch (99mm) Inner Lip .77 in or 19mm Tall Fits two piece toilets Sits between toilet tank and base to protect porcelain Fits Flush Valve. FLUSH VALVE NOT INCLUDED