Profile: Midget Louver is a designer and manufacturer of aluminum louvers and vent to solve a variety of problems related to ventilation. The commercial & industrial applications of our product include home & building construction, renovation projects, computer & electric equipment, aerospace industry, photography, printing and laboratory instruments. Our RLS series louvers are especially adaptable to a wide range of industrial, manufacturing and building construction uses. This RLS series of aluminum louver are available in 1", 1½", 2", 2½", 3" & 4" diameter.