The VFT 60/90 and VTUW are explosion-proof drying ovens of drying. The apparatus is heated with electricity its principle rests on the principle of the forced fresh air. From reduced dimensions of its obstruction outside, it not only is very well adapted for the production, but also for work of laboratory. The advantages the such almost unlimited capacity of combustible material filling and, the aptitude for solvents of the classes of temperature T1, T2, T3, T4 belonging to the groups of explosion IIA and IIB as well as the remarkable homogeneity of the temperature in all useful volume represent some points among others which make it interesting.