There were about three and a half feet of clearance.

"Which means it can be done, but only if you have high enough level of clearance to make changes? "

We've got plenty of clearance on either side and above.

To access the information, a person must have the appropriate level of clearance and a need to know.

She needed every foot of added clearance from the bottom.

There should be at least 20 inches of clearance between them.

"Even after you finally promised to try and get me a higher level of clearance, I never heard another word about it."

Here he had no more than an inch of clearance above his head.

She asked me, "What kind of clearance do you have?"

The house is now a ruin, in the process of clearance.