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 - Similar to how a canvas requires support for painting, a screen needs a frame to function. The frame differs in material and shape among manufacturers. Screen frames are made from materials like square steel tubing, flat steel sheets, plastic composite types or supported by strips of steel at the ends (akin to a scroll).