Inquiry (采购产品): Model STD 612 C 1 G Please quote your product supplied with a 20 psi natural gas step down regulator for it's inlet. Thank You. Edward J. Cardinal P.E. Firestone Sheet Metal Inc. 949 S. Broadway Ave Salem, Ohio 44460 **** Hidden Message ***** Edward Cardinal 949 South Broadway Ave Salem, OH 44460 USA Company: Firestone Sheet Metal Inc. Title: Chief Engineer Phone: (330) 337-9551 Fax: (330) 332-0735 E-mail: edcardinalpe@aol.com **** Hidden Message ***** edcardinalpe@aol.com