Save your space, decorate your room, sturdy and heavy-duty. Features Main Material: High quality 304 stainless steel. Wire drawing technology, manufactured by integral molding, corrosion protection. Main Material: High quality 304 stainless steel Door Weight Limited: 230lbs Fit for door Thickness: 1 3/8" - 1 3/4" The distance from the top of the door to the ceiling should be at least 4.5 inch If the door is 1.57 inch， distance from the door to wall is 0.87" Usually, we recommend the track length should be at least 2 times the doors width or the opening. For example, if the door is 30'' wide. You will need 2 * 30'' = 60'' long track. Or if you have an opening that is 30'' wide, you will need at least 60'' long track. Packing list：Track; Rollers; Spacers,Guide(s),Anti-jump pads,Door stoppers,Connector. All tracks are pre-drilled holes, the spacing between each hole is American standard 16''. Tracks 7.5ft and under are one complete track, 8ft and above are connected by multiple shorter tracks, and there are connection holes to expand the track at the end of both sides, therefore, the spacing between the holes in the connecting section may not be 16'' Product Details Product Type: Single Door Barn Door Hardware Kit Track type: Standard Single Installation Required Tools Needed for Installation: Tape measure, pencil, drill/Save your space, decorate your room, sturdy and heavy-duty. Features Main Material: High quality 304 stainless steel. Wire drawing technology, manufactured by integral molding, corrosion protection. Main Material: High quality 304 stainless steel Door Weight Limited: 230lbs Fit for door Thickness: 1 3/8" - 1 3/4" The distance from the top of the door to the ceiling should be at least 4.5 inch If the door is 1.57 inch， distance from the door to wall is 0.87" Usually, we recommend the track length should be at least 2 times the doors width or the opening. For example, if the door is 30'' wide. You will need 2 * 30'' = 60'' long track. Or if you have an opening that is 30'' wide, you will need at least 60'' long track. Packing list：Track; Rollers; Spacers,Guide(s),Anti-jump pads,Door stoppers,Connector. All tracks are pre-drilled holes, the spacing between each hole is American standard 16''. Tracks 7.5ft and under are one complete track, 8ft and above are connected by multiple shorter tracks, and there are connection holes to expand the track at the end of both sides, therefore, the spacing between the holes in the connecting section may not be 16'' Product Details Product Type: Single Door Barn Door Hardware Kit Track type: Standard Single Installation Required Tools Needed for Installation: Tape measure, pencil, drill/driver, level ruler, wrenchdriver, level ruler, wrench