Time to replace those old air exchanger filters! This Greentek filter kit is specifically designed for 150 CFM air exchangers and replaces the previous part number 100328. The new part number is 463044, and it also matches equivalent numbers like 50053952-005. Each filter measures 10″ x 11-7/8″ x 5/8″ - make sure to check your existing filters to confirm this size fits your unit. This 1-pair set works with several Greentek models including DH 7.15, PE 7.15, PH 7.15, PH 7.15ES, RNC 1.5, SDU 160, SH 0.8, SHM 0.8, Solace XPH 1.5, TPH 7.15, and TSD 160. It also fits GeneralAire models 3160, 4670, 8160 and Luxaire/Source1/York/Coleman models S1-ERV160 and S1-HRV160. Regular filter changes are crucial for maintaining your air exchanger's efficiency and indoor air quality. Dirty filters make your system work harder, reducing performance and potentially increasing energy costs. These genuine Greentek filters ensure proper airflow and filtration to keep your system running smoothly. Most homeowners should replace these filters every 6-12 months depending on usage and air quality. It's one of those simple maintenance tasks that makes a big difference in how well your air exchanger performs. Keep your indoor air fresh and your system happy with these quality replacement filters!