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Amazon.com: Surprecision Metal Strut Channel with Slotted Back 500mm/19.69" 304 Stainless Steel U Channel 2 Pcs Framing Steel Channel - Efficient Support Solution (Thickness 2mm, Size 41x41mm) : Industrial & Scientific
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Amazon.com: Surprecision Metal Strut Channel with Slotted Back 1500mm/59.06" Pre-Galvanized Steel U Channel 1 Pcs Framing Steel Channel - Efficient Support Solution (Thickness 2mm, Size 41x41mm) : Industrial & Scientific
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