Honeywell 23500 Replacement Air Cleaner HEPA Filter
Fits Honeywell enviracaire models 300i, 13530, 13531, 13532, 13533, 50200, 50201, 52000, 83165, 83911, 83931 and 83331. The HEPA filter is 99.97% effective at removing particles as small as 0.3 microns from the air that passes through the filter. This filter measures approximately 8 1/4 H x 9 1/4 ID x 14 1/4 OD and the Surround Seal TM filter technology prevents dirty air from leaking around the filter. For optimum performance, replace filter every 12 months.