SQUARE-Duct wireway is Underwriters Laboratories listed as steel enclosed wireway and auxiliary gutter. CSA listing is also available.
2-1/2", 4" and 6" sizes are manufactured from 16 gauge steel. Straight lengths are available with or without knockouts. Knockouts are of Various sizes in sides and bottom of wireway. 8", 10" and 12" sizes are made of 14 gauge steel and are furnished without knockouts.
