Chief's PACHFK2 is a PXR in-wall header/footer kit, designed to support the PAC502 in-wall solution. Eliminates the need to install a standard wood header and footer. Easily installs between three 16" center studs with center stud removed. Reduces PAC502 installation time. Provides a solid support structure, which eliminates the need to frame around the PAC501 with 2x4 studs. Provides knockouts for simplified electrical wiring.