We have 2 in stock.
The 5815 is a great lower cost alternative to a second blower door gauge for zonal pressure testing. The 5815 Allows you to easily make HVAC pressure measurements. These robust instruments can be used with Pitot probes to measure duct velocity. The DP-CALC 5815 is a simple to operate, hand held digital Micromanometer for fast, accurate differential and static pressure measurements.