Carlon Schedule 40 PVC Rigid Nonmetallic Conduit. 10 foot. 3-1/2 inch. Heavy Wall (EPC), Listed for underground applications encased in concrete or direct burial. Also for use in exposed or concealed applications aboveground. Sunlight resistant, Rated for use with 75 Degree C conductors, Superior weathering characteristics. CSA Certified, 3/4 inch to 4 in h are FT-4 Rated.