Outer air filter for Massey models: 230, 235 Std, 245 Diesel were the filter access cover is facing rear of tractor. Fin Diameter:(6.437 in) ID:(.665 in) ID:(2.708 in) OD:(5.242 in) Height:(11.432 in)

Inner air filter for Massey models: 230, 235 Std, 245 Diesel were the filter cover door is facing rear of tractor. ID:(2.15 in) ID:(.66 in) OD:(3.05 in) OD:(2.59 in) Height:(10.075 in)

Outer For early model Massey 135 with single element and a vertical style filter housing. ID:(2.468 in) ID:(.375 in) OD:(4.093 in) Height: (9.25 in)