Copper Creek E-Series door knobs provide excellent value. These locksets are manufactured to the highest standards using the finest materials available. They are time tested to meet the toughest national building codes for new construction. These door knobs feature solid brass cylinders (when keyed), round corner adjustable latches that fit most doors, nickel plated bolts, screw alignment adapters for easy installation, decorative rosettes and a rich finish. E-Series Knobs are standard replacement for most residential construction and meets ANSI/BHMA Grade-3. P-Series Knobs carry a limited lifetime mechanical warranty and 10 year finish warranty.