Prime-Line White Standard Reversable Sliding Patio Door Handle Set is designed for both left and right-handed mortise-locking doors, providing versatile use. This handle set features a sturdy steel latch activator and an outside pull with a removable knock-out plug, allowing for the addition of a key cylinder if needed. Installation is straightforward with included screws, though mounting holes may require enlargement to 5/16" diameter to ensure the handle base sits flush against the door surface. The lock type is mortise, with a hole center measurement of 3-15/16 inches, making it a reliable and functional choice for sliding patio doors. Model Number: