Test Your Sign Knowledge

Ready for another quiz on signs? Read on to see how much you know about lighted sign faces!

Below are photos of four different types of internally illuminated signs. Each of them has a different type of face (the portion of the sign that contains its message):

They could have a flat face, pan formed sign face, opaque face with push through letters, or an extruded pan face.

Pan forming provides extra rigidity to large faces, making them less prone to “blow out” in high winds, and pan forming also allows the use of thinner light boxes because pan faces push the advertising face out further from the lamps.

An extruded pan face has raised lettering and graphics. An opaque face with push-through letters is a solidly colored face and the text portion of the face are dimensional letters that project through the face.

Flat faces are what you see in the majority of lighted sign cabinets. Made from a single piece of acrylic or lexan, the faces are lettered and then slide into the sign cabinet. Flat faces have a more contemporary look and allow graphics to go edge to edge in the box.

These descriptions should make it a whole lot easier for you to match the face types with the photos.


Flat face lighted sign


Extruded and pan face sign









extruded pan face sign


Opaque face with push through letters sign









Sign #1 – Flat face

Sign #2 – Extruded pan face and pan face. The top sign is the extruded, and the bottom is a plain pan face.

Sign #3 – Gotcha! Another extruded pan face.

Sign #4 – Opaque face with push-through letters.

How did you do?

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