6-foot steel sliding door hardware kit, J-shape - Black, suitable for doors up to 183cm. - Model: 6-foot sliding door hardware kit - Color: J-shape - Black - Included: Installation instructions, all hardware - Applicable door size: Doors up to 183cm - Material: Steel - Style: Barn door style Thank you for looking. I purchased this on Amazon intending to install it, but it turned out that the door in my house is a different type and I couldn't install it. I tore open the bag of parts, but the contents are unused.