What is the free blocking zone in football?

Posted under american football blocking rules On By FCY9ZWLtmU

The free-blocking zone is a rectangular area established when the ball is snapped. It extends 4 yards laterally on either side of the ball, and 3 yards behind each line of scrimmage. Blocking below the waist and blocking in the back may be permitted in the free-blocking zone provided that certain conditions are met.