20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 4 Pack Monitors & Timers This fan wall shutter is

This fan wall shutter is specially made to be used in applications such as grow rooms

• Top-Max 250 ml

Collect apples

Works with the FloraFlex® PotPro™ Platform as part of the PotPro™ 16/17mm tubing drainage system

Operates with a high frequency

20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 4 Pack Monitors & Timers This fan wall shutter isImportant 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,