20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 1 Pack pump enabling it to deliver airflow

enabling it to deliver airflow even in applications where air movement is being restricted

5 Amps maximum/ 120 V/ 60 Hz

release nutrients in plant available forms

This sensor provides a rapid response and high accuracy pH measurements for industrial applications

Full Spectrum - 3000k/5000/660nm

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 1 Pack pump enabling it to deliver airflowImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7 8 and 5 1 4 inch depth filters,