Stanley National N131-458 Mfg. Adjustable Door Bumper N/A Imported Designed For Use As An Adjustable Door Stop For Single Sliding Or Bi-Parting Doors From 2-1/2" To 3-1/8" Thick Suitable For Farm As Well As Commercial Buildings With Wood, Metal-Clad Or All-Metal Door Construction Adjustable For Different Door Thicknesses