18x24x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack Reflective & Greenhouse Films Designed specifically for the ZEN

Designed specifically for the ZEN and MAX HTB HTB-2 Tapener

it provides a higher level of drainage and air-filled pore space than 25% perlite

submersible water pump perfect for irrigation

Light Source: LED

Adapters are cETLus listed as well as IP66 rated for commercial use

18x24x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack Reflective & Greenhouse Films Designed specifically for the ZENNordic 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