Weslock 1740I Keyed Entry Weathered Pewter Impresa Knobset Single Cylinder Weslock Impressa Keyed Entry Knobset with Premiere Rosettes Key locks and unlocks from the exterior and a push button locks the knobset from the interior Panic Proof feature means the knobset will unlock from the interior by simply turning the knob rather then pushing the interior push button PVD Lifetime Finish on exterior Polished Brass Keylock function Warranty: Limited Lifetime Mechanical Panic Proof Keylocks one turn of interior knob unlocks and opens door Door Prep: 2 1 8" diameter door face hole 1" diameter latch hole Cylinder: 5 pin Automatic adjustment to door thickness of 1 3 8" to 1 3 4"