The gap between THK 40 mm door panel and the wall is about 16 mm, height from the top of the door panel to ceiling is about 300 mm for reference. Only hardware is for sale. Portions of the part information on this page have been provided by winsoon. The item "5FT Strap Bypass Sliding Barn Door Hardware Kit Black Wheel Interior Exterior" is in sale since Wednesday, July 11, 2018. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Doors & Door Hardware\Other Door Hardware".The seller is "winsoonhardware" and is located in CA. This item can be shipped worldwide.