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V L UNDERWRITERS LABORATORIES INC. <br /> m <br /> 7J7�fIMCDTGN NIUP naRM�110ptt,ILLt�td s00l2 <br /> �.a <br /> an independent,not-(or-profit organization testing for public safety <br /> August 6, 1986 <br /> A. O, Smith-inland Inc. <br /> Mr. John Prince <br /> 2700 W. 60th Street <br /> Little Rock, AR 72209 <br /> Our Reference: MH8432 <br /> Subject: Nonmetallic Underground Piping And Fittings <br /> For Petroleum Products Only <br /> Dear Mr. Prince: <br /> We confirm that your Red Thread II pipe and pipe fittings <br /> are covered by our Listing and Follow-Up Service under our <br /> category Nonmetallic Underground Piping For. Petroleum Products <br /> Only (QLXT) . <br /> Red Thread Il pipe and pipe fittings that have been produced <br /> under our Listing and Follow-Up Service will bear the <br /> Listing Mark of Underwriters Laboratories Inc. The Listing <br /> Mark on the product is the only method provided by UL to <br /> identify products which have been produced under its <br /> Listing and Follow-Up Service. <br /> Very truly yours,, <br /> E. eJ. J%AMINSKI <br /> Project Engineer <br /> Casualty and Chemical <br /> Hazards Department <br /> Revi ed by: <br /> S. C. SLOWIK <br /> Engineering Team Leader <br /> Casualty and Chemical <br /> ` Hazards Department <br /> f� EJK:jw <br /> &A .L n- Tl.n <br />