The laudian is often made of a square or rectangle of stiff material (card, perspex, wood) and then the decorative cloth is stretched over it. The laudian is normally decorated with appliqué or embroidery using various Christian symbols.
Laudian altar frontal or full laudian frontal are terms that are sometimes used to describe an altar frontal with a large motif in the centre where the separate laudian is normally placed.
See also the TRC Needles entries on altar cloths; altar cover; dossal; lectern fall; World War I frontal.
GVE
A laudian altar frontal / full laudian frontal (http://standredchurchsupply.com/)