20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 8 Pleated Plus Carbon 1 Pack LUXX Bar 2 cfm Corrosion Resistant Two

2 cfm Corrosion Resistant Two Stage Vacuum Pump

1/4" to 1 3/8" in 1/8" increments

1 quart (32 oz) of Mag-Pro

Grow environments require high-capacity

-Soaking seeds and bulbs to improve germination and plant vigor

20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 8 Pleated Plus Carbon 1 Pack LUXX Bar 2 cfm Corrosion Resistant TwoImportant 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,