... 3) power saving 4) customized sizes are available 5) easy to change the photograph 1, Item No.: Single Sided LED Light Box ... Western Union & T/T 9, Advantage: Slim Type, Easy to change poster and easy to install. 10, Application: Airport, bus-stop, metro-station ... , exhibition and so on.Picture Show of goods size 600*800mm as follow:Front Side:Four Clip Open:How to change poster:How to connect:Lighting ...