20x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 1 Pack commercial-greenhouse-fixtures SPECIFICATIONS

SPECIFICATIONS

Conductivity

Grow1 Scrog Kits are a sturdy and dependable way to keep those flowers reaching for the sky

This is to help form a more balanced humidity field over your plant's entire canopy

persimilis are not effective (high temperature/low humidity)

20x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 1 Pack commercial-greenhouse-fixtures SPECIFICATIONSImportant 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 20x20x4 filter