Air Bear 16x25x5 (4 7/8) Replacement 259112-105 Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 4 Pack grow media The cardboard flanges and heavy

The cardboard flanges and heavy duty plastic plugs make these rolls easy to work with and the product easy to apply/dispense

Non-return thin louvers that close when fan is not in use to prevent outside air and debris from entering

soilless and soil

Clay particles contained in the soil largely determine a soils suitability for cultivation

If rain occurs within 24 hours of application

Air Bear 16x25x5 (4 7/8) Replacement 259112-105 Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 4 Pack grow media The cardboard flanges and heavyImportant 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 3 8 and 5 1 4 inch depth filters,