BestAir Replacement Humidifier Filter Water Pad Elite A35W Filter - 2 Pack. (You are getting 2 filters total.) | Fits the following humidifier models... >>> Aprilaire 35: 350, 360, 560, 560A, 568, 600, 700, 760, 760A, 768; >>> Honeywell HC26P: 260A, 260B, 265A, 265B, 360A, 360B, 365B, ME360, HE365A, HE280, HC26E1004, HC26A1008; >>> Bryant: HUMBBSBP 2217, 2317, 2417; HUMBALBP 2317, 2417; HUMBBLFP 1218, 1318; >>> Carrier: HUMCCLBP 2217, 2317, 2417; HUMCALBP 2317, 2417; HUMCCLFP 1218, 1318; HUMCALFP 1318; P110-3545; >>> Lennox WB2-17, WB2-17A, WP2-18, WP2-18A; | >>> Totaline: P110-LBP 2217, 2317, 2417; P110-LFP 1218, 1318; >>> American Standard: 300A. FEATURES: >>> USES UP TO 50% LESS WATER THAN A STANDARD METAL PAD. Elite Paper Water Pad uses up to 50% less water than standard metal pad. >>> Chlora-Clear Plus Vitamin C - The only humidifier filter that helps neutralize chlorine in the water. This filter removes chlorine from your humidifier water before it is evaporated into the air. 90% of public water is treated with chlorine. | >>> Micro-Free antimicrobial treatment helps protect wick filter from the growth and migration of mold, fungus, algae, and bacteria. >>> Filter Dimensions: 13" L x 10" W x 1-1/2" D. >>> Replace every 1-2 months for optimal performance (or twice per heating season). | MADE IN THE USA. Made by BestAir. + 30 DAY GUARANTEE. Go ahead and make the decision to order now. There is zero risk for you. Your purchase is backed by Amazon.com's 30 Day Guarantee. "Items shipped from Amazon.com can be returned within 30 days of receipt of shipment in most cases." No returns on used filters.