The 4260 series in a bottom roll, steel framed, mirrored, bi-pass door. Product includes adjustable top L-guides, large bottom rollers with anti-jump feature, a 1-piece 1-3/4" deep top track and a low rise bottom track. Stocked in bright white (WT). Finished opening sizes: Have a width tolerance of -3"/+1" and a height tolerance of -1/2"/+1/2". Not Available in custom sizes.