“HVAC Control Damper” is a 16-page brochure that presents the manufacturer’s extensive line of HVAC control and manual balancing dampers. Line drawings and photos illustrate the products featured.

Greenheck has introduced a round industrial control HVAC damper to accommodate higher velocities and pressure. Model HCDR-450 is rated for velocities up to 7000 fpm and pressure up to 30 in. wg, and ...

THIS column provides information about the use of outdoor air dampers in hot and humid climates and during hot and humid seasons in temperate climates in commercial buildings. Terms used in this ...