20x25x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 2 Pack hand-tools When you use this potting

When you use this potting mix the miniature cubes stack on top of each other and air pockets are created throughout the pot

• Adjustable CO2 Deadband

000 hour life rating and is UL listed

Optimal Conditions: 68-100°F with higher relative humidity as temperatures rise

Cannabis cultivation operations targeting maximum flower density and dry weight

20x25x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 2 Pack hand-tools When you use this pottingImportant 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. If you are replacing a 4 3 8 depth 20x25x4 filter