The Vibro-Curb rooftop unit curb has integral vibration-dampening spring isolators, which can be easily accessed. The isolators are custom-sized and -spaced to accommodate the rooftop unit's weight and center of gravity. According to the manufacturer, a minimum of 90 percent isolation efficiency is achieved with the isolators. Deflections of 1, 2, or 3 inches can be provided. Roofing can be completed at a later date without disturbing the HVAC unit. The flexible, 8-inch counter flashing provides a weather seal, while permitting access to the isolators. Roofing around spring access ports is not required with this curb. Vertical limit stops eliminate excessive movement caused by wind loads and seismic activity, states the company.

Thybar Corp., 913 S. Kay Ave., Addison, IL 60101; 800-666-2872 or 630-543-5300; 630-543-5309 (fax);;

eProduct #182