Apologies for not having the dimensions, but they are quite durable and have excellent clearance. I've crashed once with mine and they scratched pretty badly, but still work like a champ.
About the only way you could eke out more clearance would be with the Speedplays, I imagine, (since those are just lollipops.)

(And screw what others say about it; if class hatred ever gets upsetting enough, we can always quit our jobs or ask the boss for less pay.)