A trench drain frame and grate assembly provides drainage with a minimum clear span of thirty-six inches. The frame features side flanges with a minimum depth of eight inches and a base flange showing a five-eighths inch minimum thickness. Fasteners secure the removable grate components into the recessed frame seats. Minimum vertical dimensions include seven-eighths inch at the top seat and one and five-eighths inches overall top clearance, with a three-eighths inch minimum base flange clearance.
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