For feeding raceway, has concentric 1/2 and 3/4 trade size knockouts.

Manuals & Documentation
Catalog Number ALA3810B1
Manufacturer Legrand-Wiremold
Brand Legrand-Wiremold
Country of Origin Mexico
Made in USA No
RoHS URL http://www.ideadigitalcontent.com/files/11311/ROH_Legrand_ROHS_statement.pdf
UPC 786776536614
GTIN 00786776536614