Abstract: A frame and a method of making a frame for supporting a sign having a gas discharge tube. The frame includes a plurality of frame members. Each of the frame members is made entirely of extruded plastic. A plurality of tube hangers are coupled to the frame members for supporting the tube. At least some of the frame members are made of extruded polycarbonate, extruded polyvinyl chloride, or other suitable plastics. The method includes extruding a length of plastic and forming the sign from the length of extruded plastic. The forming step can include cutting the length of plastic into a plurality of plastic members and securing the plurality of plastic members together to form the frame.