Zonefirst has new A2L products engineered to ensure full compliance with new standards while maintaining system performance: • Twenty-four-volt spring-return damper systems: For systems using 24V ...

CHANTILLY, Va. — The Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA), an organization dedicated to the sheet metal and air conditioning industry, announced the sixth ...

The Combination Fire/Smoke Dampers combine two dampers in one. The two-position device is tested to 5,000 cycles, intended to prevent the spread of fire (UL 1-1/2-hour fire rating), as well as smoke ...