The HEPA Frame 20x24x3.75 SS KIT by Koch Filter Corp is designed for high-efficiency particulate air filtration. This frame measures 20"x24" with a depth of 3.75" and is constructed from stainless steel, ensuring durability and resistance to corrosion. The HEPA filter included in the kit captures 99.97% of particles as small as 0.3 microns, making it ideal for cleanroom environments and applications requiring stringent air quality standards. This kit is easy to install and compatible with various HVAC systems, providing a reliable solution for maintaining clean air.