The GeneralAire G-99 Air Filter Gauge takes the guesswork out of filter changes. Installed between your air filter and your furnace blower, the gauge measures airflow resistance behind your filter and lets you know when to change your filter. Installation is simple, requiring one hole to be drilled, a level, and a slotted screwdriver to calibrate. Works with any media air filter.
|Enerplace Part Number:
|Old Enerplace Part Number:
||2-1/4" x 2-1/4" x 1"
This item is sold under the following OEM (Original Equipment Manufacturer) brand and part numbers: