78 in. Black Solid Steel Sliding Rolling Barn Door Hardware Kit for Single Wood Doors with Routed Floor GuideAmerican Pro Decors Black Solid Steel Sliding Rolling Barn Door Hardware Kit for Single Wood Doors with Fittings not only looks great, it is engineered and built to rigorous standards, ensuring years of trouble free service. Manufactured using reinforced solid steel rails. Our Sliding Barn Door Hardware can readily support amongst the heaviest sliding doors with ease. For additional durability, Sliding Door Hardware Kits employ heavy duty door rollers