CRL Satin Aluminum Finish Open/Locked Lock Indicator Set Slide Down = "OPEN" Intended for Use With Adams-Rite Style Narrow Backset LocksSlide Down Shows OPEN in Green and Slide Up Shows LOCKED in Red Letters Both on a White BackgroundIncludes 26" x 1-1/2" Header Sign That Reads "THIS DOOR TO REMAIN UNLOCKED DURING BUSINESS HOURS"