Forged Iron hardware is available from 12 - 216" wide. Inside mount hardware has a maximum width of 72". Any hardware ordered 72" or wider will have a center support bracket and come with a center splice. The rod width you specify on your order does not include the width of the finials on each end. Finials add 1/2" to 7 1/4" on each side, depending upon the style. Hardware is usually ordered 4" wider than the window opening on each side.