Fresh-Aire UV® TUV-PRT-ER-24.5 24.5" x 22" AHU Purity Filter Housing Includes: TUV-RFM-4-2220 4" Reactive Filter Media w/ Goldshield, TUV-PRT-PCO-1-2220 1" UV filter w/ TUVL-200F-0S lamp and PCO media, TUVP-ER low voltage remote ballast, mounting hardware.