Application: The FILA-N luminaires are reccessed fluorescent lighting fixtures designed for lightening industrial interior premises with danger of explosion. The luminaires were certified by FTZÚ, Ostrava - Radvanice (type examination certificate number FTZÚ 05 ATEX 0043X). Body: The body of the luminaire is made from white painted metal sheet. On the body sides, there are holes for plastic cable glands M20x15. Cover: The cover of the lighting fixture is formed by tempered safety glass. The connection of the body and the glass is settled by means of glazing blades. The level of the coverage is ensured with the sealing put into the body of the luminaire. Reflector: The reflector is put inside the basic body. It is made from white painted metal sheet. The electric components are fastened on it. The reflector can be divided from the body with the disconnection of three-pole conector terminal block. The lighting fixture can be equipped on a special request with one-phase or three-phase through wiring connection from the producer. System of fastening: The lighting fixture can be fastened by means of screws directly into the false ceiling. The holes on the edge of the body are designed for the fastening. It is necessary to be particular about the sufficient hard support base.