The F20 or GJF20 was a mainstay of Glynn-Johnson for years. When the Glynn-Johnson door stop line merged with H.B. Ives it became the FS20. This door stop has been discontinued from Ives, but we have been able find a large stock. This Floor Mounted Door Stop also holds the door open, when in the latched position you can push the door and the holding latch will flip up and unlock thee holding clip. It is constructed of cast bronze or brass and then plated to your desired finish. This stop has a 2-1/2" long base that is 1-1/2" wide. The overall height is 3-1/8" with a 2-5/16" floor to rubber stop centerline. For use with door undercut up to 2-1/2".