YSD 400 Sliding Door System SLIDING DOOR SIZE LIMITATIONS NOTE: -Frame width and height should allow 3/4" for width & 1/2" for height overall clearance between the door frame and rough opening. This allows for thermal expansion and easier installation. Shim the door at all anchor locations. -For door widths greater than 20 feet consult YKK AP Technical Center. -Transoms are limited to a maximum of: Width = 7'-6" Height = 1'-0" -For transoms greater than 7'-6" x 1'-0" consult YKK AP Technical Center. Effective Date: August 20, 2018 | 06-1000-04 Page-13