What is the distance between the vertical supports? I want it to straddle a dental chair.

The leg clearance varies for each item.Please see the below. There is also a spec sheet above, under "Literature". Item 7892SS-0: 28.652" Item 7893SS-0: 28.625" Item 7895SS-0: 40.625" Item 7896SS-0: 26.625"
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