Attributes . PVC Conduit, Underground or Aboveground Application, Gray Color, 3.961 in Conduit Inner Diameter, 4.500 in Conduit Outer Diameter, 20 ft Length, Made in USA, +90 °C Maximum Operating Temperature, 1140 FT/PK Package Quantity, Belled End;Corrosion Resistant:Rust Resistant:Sunlight Resistant;Rated For 90° Cable;Rigid Nonmetallic PVC Schedule 40 Special Features, Intertex ETL Listed US;UL 651 and NEMA TC2 Standards Met, 4 in Trade Size, 0.237 in Wall Thickness, 2.292 lb Weight . Names