The BPI energy auditor training course prepares individuals to understand the various components of building science, including combustion safety, blower door testing, energy analysis, and home performance assessments.
Key difference: The two paper sizes are used for different purposes in different countries. A4 paper is part of 'ISO 216-series' , while the Letter paper is a part of the old 'American National Standard Institute'. A4 is an internationally recognized paper size that measures 8.27 inches wide and 11.69 inches tall. All âAâ sizes has an aspect ratio of 1: â 2 (square root of 2).
: a letter must have dimensions of no less than 3-1/2 inches tall with a maximum of 6 1/8. The width shall be 5 to 11-1/2 inches. The thickness at least .007 inches which should be no more than 1/4 to be handled by the processing facilities.