N.M. Code R. § 14.9.2.17
See this chapter of the UMC except as provided below. 907.2 Location. See this section of the UMC except add the following to the end: unlisted wall furnaces shall be installed with clearances to combustible material of not less than eighteen (18) inches (460 mm).
[14.9.2.17 NMAC - Rp, 14.9.2.17 NMAC, 05/15/2018]