Glossary H
Harp is described as one of the largest of all string instruments. It is musical instrument consisting of a triangular frame furnished with strings and sometimes with pedals, held upright, and played with the fingers.
Housing is described as structures collectively; structures in which people are housed, living accomodation, dwelling units.
Hood is a generic term for a device designed to capture contaminated air and conduct it into an exhaust duct system.
High efficiency particulate air filter (HEPA) refers to a filter which removes particles in the air by forcing it through screens containing microscopic pores.