20x25x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack Sprayers and Wands These tiny wasps parasitize leafminer

These tiny wasps parasitize leafminer larvae in the first and second stages of development

or even open it to check on things or add ingredients

Keep your filtration system in tip top shape

Included fitting: 3/4"

ETL Certified

20x25x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack Sprayers and Wands These tiny wasps parasitize leafminerNordic Pure Half Inch Ring Panel AC Furnace Air Filters consist of an internal frame bonded between flat layers of two different types of electrostatically charged HVAC furnace filter media. The first layer is a high capacity, polyester filter material which acts as a pre filter, capturing large airborne particles. The second, more efficient, layer is a MERV rated smooth poly blend filter material. The electrostatic charge works as a magnet to draw in