The No 1421 round white porcelain knob is fitted to a turned shank with graceful cavetto profile. Porcelain knobs, popular in the 19th century, contributed to the richness and variety of materials in domestic interiors. The knob measures 2-3/8″ in diameter with a projection of 2-3/8”. Full mortise entry locks, privacy locks, passage latches and tubular latches can be provided for use with this knob. The shank and rose are available in all Nanz plated and patinated finishes. This knob is also available in black porcelain.