Comparison : |
Item # 6061-T6B-400-400-313, American Standard Aluminum Wide Flange Beams Item # 6061-T6B-600-600-240, American Standard Aluminum Wide Flange Beams Item # 6061-T6B-800-650-245, American Standard Aluminum Wide Flange Beams Item # 6061-T6B-800-800-288, American Standard Aluminum Wide Flange Beams
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