AfterMarket GE SmartAire Cut-to-Fit Replacement Carbon Pre-Filter AfterMarket Cut to Fit Carbon Activated Pre-Filter For GE Room Air Cleaners. Made from Premium BulkFilter Brand Filters. MADE IN THE USA Makes 1 to 6 pre-filters depending on the model. Large 16"x 48" cut-to-fit activated carbon Filter! Helps remove large particles and reduce common household odors such as cooking odors, tobacco smoke odors & pet odors