GOODJAYCO verified replacement for Allen Bradley 855T-L24 LED / 855T-L24LF These Goodjayco brand replacements for Allen Bradley stack lights bulbs. are often used in loading docks in stack light assemblies. These lights help illuminate colored lenses that guide drivers and loading teams to precise and safe loading at all times of day and weather conditions. Upgrading to LED from outdated incandescent provides greater reliability, increased safety, lower energy cost, and lower maintenance costs by increasing the life of the bulb by over 10x. The incandescent alternatives use 25-40W of power while these LED replacements are up to 20x more energy efficient using 1-2W of power.