Maximum Door Weight Capacity: 250lbs. HOW TO CHOOSE TRACK SIZE. 1 Single Door Min Track Size= 2 × Single Door panel Width.2 Double Door Min Track Size= 4 × Single Door panel Width. 2 doors just slide on the opening space, and cannot be put away to the near wall, Track size= 2 × Single Door panel Width. 2 doors overlapped onto each other can be slid to the one side wall, Track Size= 3 × Single Door panel Width. 2 doors can be slid on the either sides wall, Track size= 4 × Single Door panel Width. The item "4-20FT Carbon Steel Sliding Barn Door Hardware Kit For Single/Double/Bypass Door" is in sale since Monday, November 11, 2019. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Doors & Door Hardware\Other Door Hardware". The seller is "xihaoltd" and is located in CA. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.