This black finish patio door handle is a surface mounted with hook latch. Often found on older style patio doors, it is mounted on the door inner frame surface and the hook latch engages the keeper mounted on the jamb. It has a 2-1/8 inch high extruded aluminum inside handle with an anti-lift feature on the hook latch. The mounting holes are 4-15/16 inch on center. The outside handle is a low profile extruded pull and is non-keyed. To key this unit order Prime-Line part E 2071. From the Manufacturer This patio door handle is constructed from aluminum and comes finished in black. It features a reversible surface mount design and includes a fixed anti-lift key for extra protection. This handle has a height measuring 1-1/2 in. with a latch hook projection of 3/8 in.