4 Hole Post Base Channel, 6" Square for All 1-5/8" Strut Channel, Side Orientation - Heavy Duty, Electro-Galvanized4 Hole Side Orientation Post Base Channel For 1 2" Bolt in ALL 1 5 8" Strut Channels Made from heavy duty 1 4" thick electro galvanized steel Zinc coated to prevent rusting and corrosion Base has 4 holes mounted 3 1 2" apart, measuring 3 4" in diameter Side Orientation Strut Channel has 6 holes mounted 1" apart (see images), measuring 1 2" in diameter Measures: 6" x 6" base, 3 7 8" tall, 1 4" thick Fits 1 2" Bolt in all 1 5 8" Strut Channels (NOT

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