Basic Protection
(NEMA 12, Dust, Dripping water, Idle Hands)
Increased Protection
(NEMA 4, Washdown)

47C Enclosure
FDA - Food Environments
(Washdown, Corrosion Resistant, Reduced Moisture Traps)

42S Enclosure
Explosion Proof
(Eliminates ignition source in explosive environments, Many have NEMA 4/NEMA 4x rating)

L4 Enclosure
Lighting Enclosures
(Most are designed for FDA applications)
http://www.enfionsh.com