Purolator P1200 High End Filters supplied by Sterling Seal & Supply can effectively reduce pollen, dust, mold spores and pet dander. Purolator High End Filters help reduce dust accumulation and allergy causing irritants and delivers up to 98% efficiency on 5 micron and larger particles. P1200 filters have a unique face board design which lowers initial static pressure. Model P1200 replaces Trion Air Bear “Cub” 259112-101, 255649-101. P1200 filters supplied by Sterling Seal & Supply come with Gasketing on Top and Bottom. The P1200 filters serve as effective replacements in home heating/air cooling system cleaners such as those manufactured by Trion Air Bear Cub Model: 455622-425; Lennox Model: BMAC-12C; GeneralAire Air Cleaner: MAC1200 (5FM1625); Skuttle: DB-25-16 (448-1); Source 1: S1-MAC101162505 (York); and Ultravation: 90-006, 90-031 (91-005). ********With proper continuous use, the P1200 will capture pollen, dust, tobacco smoke residue, grease and pet dander which usually collects on furniture, windows, and carpets from the household environment.******** You will quickly notice a difference in the air quality of your home - fresher indoor air, less dust, pollen, and spores. <<<<<< Fire Retardant Construction, the P1200 is classified per UL Standard 900 for flammability.>>>>>> Filters shall be tested in accordance with ASHRAE 52.2 Test Standard. The filter shall be classified per UL 900 for flammability. Insist on the P1200 from Sterling Seal for high-efficiency, quality construction materials, workmanship and performance. ***** All P1200 filters supplied by Sterling Seal & Supply are individually wrapped by heat shrink wrap, 75 gauge, no matter what quantity pack you purchase *****