The professional 3D printer A4 from the Italian manufacturer 3ntr is a melt deposition machine with two extruders. It is possible to have a triple extruder version on request when ordering. It has a print volume smaller than its sister, the model A2, of 295 x 195 x 200 mm. It can also print at temperatures up to 450°C, allowing access to a wide range of plastic filaments. It has a heated enclosure.