20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 12 Pleated Plus Carbon 2 Pack hydro-x The ergonomic handle is very

The ergonomic handle is very comfortable to grip and takes it easy on your hands when you're applying a lot of pressure

Simple to all-in-one use Veg and Bud formulas

Broad Crop Compatibility – Labeled for use on vegetables

Hanna suggests cleaning the bulb and junction of your electrode on a regular basis to ensure that the probe is always clean and prevent any clogging of the junction

Highly cost-effective - use a little and save the rest for later

20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 12 Pleated Plus Carbon 2 Pack hydro-x The ergonomic handle is veryImportant 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,