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Subduct Riser Manufacturing, Ltd. (S.R.M.) specializes in manufacturing and sales of code-compliant low-profile subduct risers for multi-story Group B and R occupancies. S.R.M. was established to focus on sales and manufacturing efforts to this growing marketplace. S.R.M. is an offshoot of a company whose founder's have over 35 years of experience manufacturing and selling products to the HVAC/R industry. All of our products are proudly made in the United States of America.