Guides A-Z

Showing results 1 - 13 of 13

Description
Guide describing how to use a blower door test to determine building envelope air leakage.
Description
Guide describing garage doors that are pressure-rated to withstand wind pressures from hurricanes, high winds, and tornados.
Description
Guide describing how to undercut the doors in bedroom walls to balance air pressures between rooms and to enable stale air to return to a central heating system's air handler for reconditioning even when room doors are closed.