| 摘要 |
A sign includes a main body having a first surface and a second surface and an overlay removably attachable to the first surface or the second surface of the main body, and at least two fasteners attached to the overlay for removably securing the overlay to the first surface or the second surface. Each fastener can pass through an oversized hole in the overlay and be movably secured to the overlay with a washer. Each washer spaces the overlay from the main body when the overlay is attached to the main body. The main body can include a plurality of hollow cells within the main body. |
