90 degree internal corners. No couplings required.

Manuals & Documentation
Catalog Number S4017
Manufacturer Legrand-Wiremold
Brand Legrand-Wiremold
Country of Origin United States
Made in USA Yes
RoHS URL http://www.ideadigitalcontent.com/files/11311/ROH_Legrand_ROHS_statement.pdf
UPC 786776512427
GTIN 00786776512427