Greek key

Greek key is an ornamental pattern consisting of repeated vertical and horizontal lines, often in relief, and much favoured as a design element in neoclassical architecture, and furniture.

Three great examples of this are shown above, in the Jamb advert, used in the chimneypiece, and in the gilt frame, and in the planter from Haddonstone.

Interestingly enough, the Chinese also used a key pattern, with a number of variations, one of which is similar to the Nazi swastika used in the 1930s, and which has therefore taken on an unwelcome association.