Gates
it depends on the model. it can be between 60" up 109". the most popular is 96 1/2". Check what deck model no. you have and go from there
Get your model number and put it into a google search like this "snapper model *******" You should get a few companies that list the parts for it.
I just relaced the same belt on the same model number tractor yesterday and it was an 88"x1/2".
call sears give them your model number they will look it up for youIt is a Craftsman belt #144959 which appears to be 1/2" X 95 1/2"
A102
Question is too vague as ther are more than one size deck.
what size is the belt for a 46 in cut deck belt with 6 pulley's.
Most LT12H mowers take a #213676 OEM belt or #6885 Gates belt for the blade application
Hard to answer without a deck size.
a115 for triple deck
5/8 x 57"