This is a black, flush mounted handle and latch set used that is used by a variety of patio door manufacturers. It has a steel hook latch. This handle set will fit a minimum door thickness of 15/16 inch, and a maximum of 1-1/8 in. thick. It is 5-11/16 in. long, and 7/8 in. wide with mounting holes 5-1/8 in. on center. Made of diecast metal, the handles fit flush into the screen door frame with an inside automatic locking feature. The steel latch has a 7/8 in. projection and slides up and down to engage the Prime-Line keeper A 203.