Rigid PVC plastic conduit. UL listed in accordance with UL 651. Conduit meets the requirements of the UL Sunlight Resistant rating and is listed by UL for use in direct sunlight. Can be used with 90 C rated conductors subject to limitations by NEC article 347-3. Conduit can be used in above ground or underground installations, including direct burial with or without concrete encasement as described in NEC articles 300-5 and 710-3(b).