| 摘要 |
A self-supporting modular switchboard panel formed from a plurality of rectangular frame elements with four solid side faces. The corner edges are beveled to provide a 45 DEG angle with the side faces so that when four frame elements are placed together to form a rectangular section, the center thereof forms a square which serves as a perch for retention clips and cover fasteners. Projections and grooves are disposed on opposed side faces for various retention possibilities.
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