The Multi-Zone Retro-Mate is a self-contained unit with zone and bypass dampers designed to mount on top of the existing Multi-Zone curb and mate to the existing Multi-Zone ductwork and zones. It converts a single-zone, constant-volume rooftop to a variable-air-volume Multi-Zone. The manufacturer says the unit provides easy access to the 18-gauge zone and bypass opposed-blade dampers and actuators after installation is completed. The curb includes 1-1/2-inch-thick, 3-pound insulation, transitions, baffles, and structural supports designed to mate the rooftop unit to the curb and zoning. The Multi-Zone Retro-Mate is fabricated of heavy-gauge galvanized steel.

Thybar Corp., 913 South Kay St., Addison, IL 60101; 800-666-2872;;

eProduct #191