Please according to the categories and printing requirements of your company, at the same time, reference the ” Conventional od ”  in the form, to choose the most suitable material; unqualified aluminum frame can cause the following quality problem: mesh distortion, tension reducing, shorten the service life, Screen serious deformation, Printing shift etc; frame size selection must depend on the area of the printing and printing type, Printable area of the external usually should leave enough space for the ink area!