Why Vic Petrossian invented the Everlock damper handle to replace wingnut dampers
"I hate wingnuts." That was what Vic Petrossian said he was thinking 10 years ago when he owned and operated an HVAC construction ductwork fabrication firm.
“Our duct and fittings screamed quality and we wanted our clients to notice that,” he said. “But we kept using these cheap-looking wingnut dampers. I hated that. I hated how they looked to our clients.”