Item 3510240S has must read information.
: FOR MODEL 34HA USE PLATFORM ONLY. FOR MODELS 40HA & 45HA,BRACKET # 0901756 IS REQUIRED & MUST BE SOLD SEPARATELY. FOR MODEL 60HA BUILT PRIOR TO AUG.1990 BRACKET # 0901525 IS REQUIRED & MUST BE SOLD SEPARATELY. FOR MODEL 60HA BUILT AUG.1990 TO PRESENT BRACKET #0901756 IS REQUIRED & MUST BE SOLD SEPARATELY.