For over 50 years, TSI Alnor has manufactured high-quality air velocity equipment. One of their primary products is the air capture hood, also known as a balometer. These devices are specially designed to measure the amount of air coming out of grilles and diffusers in HVAC systems. This is where FLW comes in as the leading stocking distributor of TSI Alnor instruments. They provide a complete line of capture hoods, air velocity meters, air quality meters, air velocity transducers, airflow monitors, and more. These instruments are essential for maintaining air quality in any HVAC system. With the collapsible hood sealing over the grille or diffuser and the meter measuring the airflow volume, these balometers are an accurate and direct way to determine the amount of air passing through. Choose TSI Alnor and FLW for all your air velocity and quality needs.