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Grid Shelf (Pba-Gsd) For Use With Metro Smartbench Esd Workbenches (22221-504 -506 -508 -338). Mounts To The Wire Grid Panel (22221-376 -378). Black Powder Coating. Dimensions: 22.9Wx47Lcm. Load Capacity: 22.7Kg. Shipping Weight: 1.8Kg.