Screen frame - Much like a canvas for painting a screen has to be supported on a frame in order to do its job, this frame differs between manufacturers in both material and shape. Screen frames can be made from materials such as, square steel tubing, flat steel sheets, plastic type composites or they can just be supported on the ends with strips of steel (similar idea to a scroll).
Screen frame - Just like a canvas needs support for painting, a screen requires a frame to function properly. The frame can differ in material and shape among manufacturers, using materials such as square steel tubing, flat steel sheets, plastic composite types or supported by strips of steel at the ends (similar to a scroll).