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orchards & vineyards
and Soft Dimming capabilities
including the production of ATP (plant sugars) and the transfer of those sugars throughout the plant tissue
the SPYDR 2 Series is just 1
20x20x4 (3 5/8) Pleated MERV 8 Air Filters 2 Pack special-order orchards & vineyardsImportant 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
