The Sandleford door lever and knob collection features both traditional and modern styles. Our extensive selection fits all types of doors and comes in all shapes and sizes. Our wide selection of materials and finishes ensures that you can discover the ideal style for your house. Quality and engineering meet aesthetics, and a mechanical guarantee of 10 years provides you with peace of mind.  Mortice Knob Set: Usually more conventional in design, mortice doorknobs fit all kinds of doors and are set atop a circular rose. If security or privacy is needed, they can be used alone, for standard hallway doors, or in conjunction with locking or bathroom escutcheons.