WINSOON Antique Sliding Barn Door Hardware Door Bottom Floor Guide Plastic Powder Coated Black with Screws (1PC Floor Guide) Powder Coated Black Finish for Ultimate Durability Can be used with doors that have groove in the bottom The groove should be 20mm high and 7mm wide Floor Guide Size: 42mm(L)X23mm(H), please see picture. ONLY the floor guide is for sale. Door is not included. Ship by USPS and will arrive in 7-15 business days.