Easy to Install: A step by step manual is included in the set. At the most beginning, please choose the configuration that workable and selected the necessary accessories. It is very easy for you the install the floor guide by following the manual;Service: We provide 24-hours online customer service to help you to solve the problem more efficiently.8 IN 1 and Adjustable: 1 guide with 8 different assemble options, this floor guide can be used for 2 1/4"--3 5/8" thick door panel; Kindly measure your door dimension and confirm the same.Flush Bottom: In the bottom of the floor guide, there is a groove which can protect the floor from scratching by the screw;Brand: SMARTSTANDARD; Condition: Brand New; Material: Solid Steel and POM NYLON; Surface: Frosted black;