6.6FT/201CM Sliding Barn Door Hardware Kit, Heavy Duty, Smoothly and Silently, Easy to Install, Fit 39.6" Width Single Door Panel Style:ZT2 (79.2in) If door thickness is 4cm

If door thickness is 4cm

makes the system slides like butter

as the screws can be used in a variety of applications requiring different lengths

double door need 2 pairs

6.6FT/201CM Sliding Barn Door Hardware Kit, Heavy Duty, Smoothly and Silently, Easy to Install, Fit 39.6" Width Single Door Panel Style:ZT2 (79.2in) If door thickness is 4cmDurable & Sturdy: CCJH Sliding barn door hardware kit is made of heavy duty construction steel, Sliding smoothly; Maximum loading capability is 220lb per door; Fit for 1 1 5'' 2'' thickness door panel; The clearance between door panel and wall is about 5 8"; Ultra Quietly: Super silently nylon wheels bring no noise when sliding your door; Spring damping door stopper make the close more softer and comfortable; Give you pleasant mood as no noise when