McNICHOLS ExtrenŽ I-Beam is an I-shaped fiberglass structural component beam; the top and bottom of the beam (flanges) are equal in width but less in size than the beam height. Beams are stocked in three thicknesses, heights range from 4 to 8 inches with flanges from 2 to 4 inches. Beams are 20 feet long. For beams with wider top and bottom flanges, select the next category for ExtrenŽ Wide I Beams.
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