Section 405. Total Building Performance {As in IECC-R, subject to the following MBPS Modification:}

{MBPS Modification to Table R405.5.2.1(1) – In Table R405.5.2(1) {"Specifications for the Standard Reference and Proposed Designs"}, for the "Air exchange rate" row, under the column for "Proposed Design", after "The measured air exchange rate", insert ", not to exceed 5 air changes per hour with baseline of 3 air change per hour in climate zones 4 and 5 maintained for Standard Reference Design"}