Specifications include, but are not limited to: CONDUIT,RESTRAINED JOINT 4" DIA, 20 FT, BELL END * CITY STOCK # 863 001 02172 * RIGID NONMETALLIC RESTRAINED JOINT CONDUIT WITH INTEGRAL BELLS, SCHEDULE 40, 4" DIAMETER, DESIGNED FOR BELOW GROUND USE. SUNLIGHT RESISTANT, GRAY, 20 FOOT LENGTHS. TO BE PACKAGED IN UNITIZED BUNDLES OF 580 FEET EACH. MUST MEET CITY OF AMES SPECIFICATION RESTRAINED JOINT CONDUIT. * NORTH AMERICAN SPECIALTY PRODUCTS (CERTA-COM) #667237 ONLY. CONDUIT, PVC TYPE 40, 4" DIA. 20 FT, 1 BELLED END * CITY STOCK # 863 001 02184 * CONDUIT, RIGID PVC, TYPE 40, 4" DIA., IN 20 FT LENGTHS, ONE END BELLED PER LENGTH. TO BE PACKAGED IN UNITIZED BUNDLES OF 1140 FT. MUST MEET CITY OF AMES SPECIFICATION SCH 40&80 CONDUIT. * CARLON CATALOG # 49015-020, CANTEX CATALOG # A52EA42, OR APPROVED EQUIVALENT.