The Prime-Line(TM) sliding patio door black anodized aluminum handle set is surface mounted and does not require a mortise. The low base profile reduces pull handle interference with vertical blinds. A separate lock inserted into base permits instant reversibility and the fixed anti-lift key prevents unauthorized entry by outside manipulation. The handle retracts to the unlocked position if the door is closed with the hook extended. The lock is covered by a 1-year warranty against manufacturing defects.