Replacement HEPA air filter for the Kathy Ireland KI-3000 air purifier. Replace every 8 to 12 months or as needed. For the Kathy Ireland KI-3000 model air purifier only. 12" high. 11" wide. HEPA replacement filter. For the KI-3000 model air purifier. Replace every 8 to 12 months or as needed. 12" high. 11" wide.