DIYHD Black Flat Track Top Mount Roller Bifold Sliding Barn Door Hardware For 4 Doors(NO DOOR) Black Hardware Only,Not Including Door Panel Material:Metal,POM;Surface:Rustic BlackSuitable for door panel thickness 1-3/8"~1-3/4"The gap between door & wall only has 1/4"~3/8"Floor to center of rail= door height+ 2 3/8" Full set hardware including: Fixed roller with spacer X2 + Sliding roller X2Roller&door connector X4Track X1(51-9/16" is 1 piece track; 84" is 2 short tracks combined together)Track&wall connector X 1 SetStop X2 + Floor guide X2 + Hinge X6 Roller fixed roller with spacer + sliding roller Hinges Suitable for door thickness:1-3/8"~1-5/8" Sliding track 38-3/16", 43-5/16", 51-9/16" are 1 piece track; 84" is 2 short tracks combined together. Track's length | Fully opened door openning's length Gallary for reference