Nispira AER1 (2) HAPF300AP Performance Plus + (2) HAPF300AHD Allergan for Holmes Air Purifier HAP242-NUC HAPF30AT HAPF300AP-UR4 HAPF300AHD-UR4, 4 HEPA 4 Carbon Pre Filter. Pet Water Fountain the filter is designed to

the filter is designed to maintain its structure during operation and support consistent performance over time

Suggest to replace every six months to keep the air fresh in your refrigerator

Also compatible with Mini tower HAP8650B-U

Drop-in Replacement Filter Design Cylindrical Replacement Filter Application Indoor Air Purifier Maintenance Recommended Replacement Every 3–6 Months Depending on Usage Manufacturer Nispira Easy Installation

Nispira AER1 (2) HAPF300AP Performance Plus + (2) HAPF300AHD Allergan for Holmes Air Purifier HAP242-NUC HAPF30AT HAPF300AP-UR4 HAPF300AHD-UR4, 4 HEPA 4 Carbon Pre Filter. Pet Water Fountain the filter is designed toQUALITY AIR FILTERS: 4 premium 3 in 1 HEPA Carbon filters with 4 pre filters compatible with Holmes and Bionaire air purifiers. CARBON PRE FILTER: Another layer of protection to prevent any hair, dust etc from entering the filter. It also removes any unfavorable household odor. Enhanced Air Quality: Effectively removes odors, pollen, dust, smoke, VOCs from the air for a fresher, cleaner indoor environment. Long Lasting Performance: Durable