Manufactured from unbreakable ABS plastic, the series 1 frames are conceived for small and medium prints, and they may be used with a wide range of accessories presented in the subchapter "Accessories for series 1 and series 2 frames". The posters can be inserted through a thin slot (on the short side in the case of PORTRAIT frames, or on the long side in the case of LANDSCAPE frames) and can have a maximum thickness of 3 mm. For an optimal appearance and protection of the display we recommend placing the print in an antireflective PVC "U" pocket.