Rooftop HVAC equipment provides enticing features for the design engineer and cost advantages for the owner. Fans, ventilation equipment, a heat source, compressors, condenser, and controls are ...

The Lag Series acoustical pipe and duct lagging features a loaded vinyl noise barrier combined with a fibrous glass scrim-reinforced aluminum foil facing on one side. This product is suitable for a ...

The Duct acoustic test rig (DUCT) is an extremely modular and versatile flow channel designed for acoustic measurements. At the test bench, we examine special silencer structures known as liners.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. To measure the NC value of noise in your control room or studio, or to verify that a specified NC ...