Thanks for your inquiry!

Rather than hook up a garbage disposal to the drain, the disposal will replace the drain, as it has its own flange and mounts directly to the sink

Thank you so much for your verification!!

So a single sink comes with one drain to which the garbage disposal connects?

so the garbage disposal has dual purpose; drains water and used for garbage disposal? Is there certain specifications on the diameter of the garbage disposal that will fit the diameter of the drain?

The specs say 32"deep must by typo

Please tell me width height and length