A-Frame Sidewalk Sign In Large Format 24"x 36". Comes with two reversible, all weather Corex panels. Black Powder Coated Steel For Years Of Use In All Weather Conditions! What Do They Make Bridges, All Types Of Heavy Equipment And Skyscrapers Out Of? ........You Guessed It STEEL Because Of Strength And Long Life In Inclement Weather Conditions! PANELS EASILY SLIDE IN & OUT FOR QUICK MESSAGE CHANGE!