The glazed panels that fill the space above the shop window and below
the structural lintel are called the transom. In some cases, especially
over the entry door, the transoms were operable to allow air to circulate.
Transoms can be of plate glass or divided into small panes of glass; in
some cases, special prisms were installed to deflect light into the rear of
Guidelines for Transoms
Remove materials which cover the transom and repair transom glazing and frames.
When the transom is damaged or destroyed, replace with a similar frame and pattern in the same material or an unobtrusive new material.
Do not cover the transom.
Do not infill the transom space with brick, wood or other materials.
Do not paint the glazed portions of the transom.
Do not over decorate transom with inappropriate patterns, colored glass or designs.
INAPPROPRIATE DESIGN: Do not infill the transom with brick or wood, or cover it over with signs.