| Comparison : | 
									Item # 40,563, Steel  A36 Channel 2x0.625x0.25x12" Item # 40,564, Steel  A36 Channel 2x0.625x0.25x24" Item # 40,565, Steel  A36 Channel 2x0.625x0.25x36" Item # 40,566, Steel  A36 Channel 2x0.625x0.25x48" Item # 40,567, Steel  A36 Channel 2x0.625x0.25x72"
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