Honeywell HEPA-Type Replacement Filters. Fits Units: 50150 50200 18150 50250 50300 50310 11520 12520 13520 17200 17400MODEL- HRF14 VENDOR- HONEYWELL FEATURES- Replacement HEPA Filter The HRF14 is Honeywells HEPA replacement filer. It consists of Honewell HRF14 FILTER & Spacer for universal replacement for the following models: (NOTE: some models require multiple filters) 50150 50200 18150 50250 50300 50310 11520 12520 13520 \ 17200 17400. MANUFACTURER WARRANTY:  1 YR