first and second flange members disposed along the full length of {HEAD ~ opposing edges} of {TAIL ~ said plate member}, wherein the first flange member is disposed away from the upper surface of said plate in a direction opposite to the direction of said second flange member 
first and second flange members disposed along the full length of { HEAD ~ opposing edges } of { TAIL ~ said plate member } , wherein the first flange member is disposed away from the upper surface of said plate in a direction opposite to the direction of said second flange member
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