A KD or Knocked Down hollow metal drywall frame (slip-on frame) is used for interior applications and comes in 3 pieces (strike jamb, hinge jamb and head). The KD drywall door frame is designed to be installed after the stud wall has been built and drywall applied, as it wraps the wall. For use with metal or wood doors.
Easy to install - simply wrap built stud wall
Fire-Rated up to 90 Minutes (1-1/2 Hour Label)
Standard Jamb Depths of 4-3/4" to 8-1/4"