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PP. 83 & 87 of the Power-Strut Engineering Catalog, Copyright 1987, 1992, 1994, made available by Grinnell. |
Corporation and on pp. 84, 86, and 90 of the B-Line Strut Systems Engineering Catalog (BL2R). |
Copyright 1985 by B-Line Systems, Inc. p. 108 of the Power-Strut Engineering Catalog. |