Standard wooden pre meshed hinged frames for a4 printing this ready made screen is ideal for teachers who simply want to develop their pupils skills in screen printing rather than the laborious task of producing their own frame fitted with general purpose 43tpc white mesh the hinged base makes them easier to use when a number of prints are required or for over printing supplied with a free squeegeeframe dimensionsinside width x length 270 x 357mmoutside width x length 320 x 407mm