16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 10 Pleated Plus Carbon 1 Pack Sprayers and Wands Highly concentrated for rapid adjustment

Highly concentrated for rapid adjustment

pH and EC/TDS readings are automatically temperature compensated

more capable

Included is an alarm relay

PLUS a healthy dose of Vitamin B1 to help relieve stress caused by high performance bloom regimens

16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 10 Pleated Plus Carbon 1 Pack Sprayers and Wands Highly concentrated for rapid adjustmentImportant 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,