The Arzel Zoning EzyFit damper allows contractors to use it in applications where there is limited or no access to ductwork. The product installs directly through the register boot. The compact folded design allows contractors to slip the damper through the register while magnets set it firmly in place. The gasketed blade shuts off airflow for minimal airflow leaks. The EzyFit ensures quiet operation with the tight seal of the gasket material, eliminating noisy whistling. The product is available in 5, 6, and 7 inches and can be mix and matched with other EzySlide dampers on a system. It fits in the boot-end of angled, straight, or any type of metal ductwork both horizontal and vertical.