Under the recently debuted Kelair Dampers name, Matot has transitioned its focus to the custom design and fabrication of dampers and assemblies.

Zonefirst’s solutions ensure safe and efficient performance for residential and commercial A2L systems, the company said in a press release.

The Greenheck HBT-321 is a heavy-duty, bubble-tight isolation damper designed for critical environments where leakage control is paramount.

ANSI/AMCA Standard 500-D establishes uniform laboratory methods for evaluating the performance of dampers in terms of air leakage, pressure drop, dynamic closure, operational torque, and more.

The BTD830 is manufactured in an ISO9001 certified factory and comes with a 5-year limited warranty.