Ultrasonic Humidifier Demineralization Cartridges HoMedics UHE-HDC4 4 pack New Helps prevent calcium and lime build-up in your HoMedics brand ultrasonic humidifier. Reduces mineral build-up and "white-dust" caused by hard water when used in ultrasonic humidifiers. Works with all HoMedics ultrasonic humidifiers with a capacity of one gallon and larger: UHE-OW14, UHE-WM85, UHE-WM65, UHE-CM25, UHE-CM45, UHE-OC1. Simply drop one cartridge into water tank. Replace cartridge every 30-40 fillings, depending on the water hardness. Includes 4 cartridges. · Reduces mineral build-up and "white-dust" caused by hard water when used in ultrasonic humidifiers · Works with all HoMedics ultrasonic humidifiers with a capacity of one gallon and larger: UHE-OW14, UHE-WM85, UHE-WM65, UHE-CM25, UHE-CM45, UHE-OC1 · Simply drop one cartridge into water tank · Replace cartridge every 30-40 fillings, depending on the water hardness · Includes 4 cartridges "Length: 1.75 inch Height: 0.87 inch Width: 0.87 inch Weight: 0.02 pounds" Ultrasonic Humidifier Demineralization Cartridges HoMedics UHE-HDC4 4 pack New Reduces mineral build-up and "white-dust" caused by hard water when used in ultrasonic humidifiers Works with all HoMedics ultrasonic humidifiers with a capacity of one gallon and larger: UHE-OW14, UHE-WM85, UHE-WM65, UHE-CM25, UHE-CM45, UHE-OC1 Simply drop one cartridge into water tank Replace cartridge every 30-40 fillings, depending on the water hardness Includes 4 cartridges HoMedics UHE-HDC4 Ultrasonic Humidifier Demineralization Cartridges Helps prevent calcium and lime build-up in your HoMedics brand ultrasonic humidifier. Reduces mineral build-up and "white-dust" caused by hard water when used in ultrasonic humidifiers. Works with all HoMedics ultrasonic humidifiers with a capacity of one gallon a Shipping is FREE to all addresses other than APO/PO Boxes in the lower 48 states. All items are shipped from US-based warehouses across the Nationwide. Shipping is via USPS, UPS, FedEx (depending on location and package weight) Unless stated otherwise, all orders will ship within 24-48 hours of cleared payment. payment: We Prefer PayPal as Payment Method Confirmed Addresses Only feedback: If you have any question/problem with your order, please DO NOT leave negative feedback. Simply contact us first and we will do our best in order to resolve any issue or problem. We strive to meet all buyer's satisfaction, so if you're happy with the purchase, please spend a few minutes of your time and leave us a 5 Star ***** Positive Feedback. that would be your small but valuable contribution towards our success. contact us: If you have any questions please contact us through "Ask seller a question" link. We will respond within 1 business day or faster. return policy: All returns must be submitted within 30 days of the date of purchase. Return shipping is the responsibility of buyer unless the return is a result of our mistake. We will pay for shipping replacement back to you if an exchange is requested. Please note that we cannot give refunds after the 30 day limit has expired. When sending in a return, please note that it can take up to 7 business days for the return to be processed. We do our best in order to process orders as quickly as possible. delivery time: We ship from many different locations depending on the product stock, availability and the shipping destination. We ship most items within 24 hours of cleared payment during normal working days Monday-Friday, except Holidays Weekends. Most orders are in transit for two days but some may take longer. If you have a specific time frame please contact us before you make the purchase.