19' shelf perforated 1U, Patent: PUV 2012-25430. , Accessory pack, Screws M6 x 10 (for 150 and 250 mm - 4x) - 8x, Plastic washers (for 150 and 250 mm - 4x) - 8x, Cage nuts M6 (for 150 and 250 mm - 4x) - 8x, Screws M5 x 12 (for 150 and 250 mm - 4x) - 8x, Rear bracket (for 150 and 250 mm - 2x) - 4x