MASSEY HARRIS 35 MASSEY FERGUSON 35 & TO-30 GAS HORIZONTAL MUFFLER . REPLACES: 181600M91. 26" HORIZONTAL 22" VERTICAL INLET I.D. BASE PLATE OUTLET OD 1 1/2". This Item is a special order item, we may have them in stock but if we do not we can order them. If you have any questions please call 1-800-367-8751 mon - fri 8a.m. to 5p.m.