Compatibility: Accurately designed for EQWF813, Relion RCM832 / RCM-832N, PCWF813, EQ-2119-UL, PCCM-832N and all cool mist humidifiers using WF813-style filters. Ensures proper fit and stable moisture output. High-Density Moisture-Absorbing Mesh: Upgraded dense wick structure improves water absorption and vapor output. Helps your humidifier deliver steady moisture during dry winter months. Reinforced Aluminum Support Layer: Built-in aluminum foil layer strengthens the filter core, maintaining shape and extending service life. Reduces sagging, tearing, and blocked airflow seen in standard paper-only filters. Easy Replacement: Simply remove the old wick and the replacement. Each filter is precisely cut for a snug, leak-free fit, ensuring smooth airflow and clean, steady moisture output without any tools required. Cost-Effective 3 Pack for Seasonal Use: Includes 3 replacement wick filters for continuous use through the humidifier season or multiple rooms. For best results, replace every 2-4 weeks depending on water quality. Ensures proper fit and stable moisture output. Upgraded dense wick structure improves water absorption and vapor output. Helps your humidifier deliver steady moisture during dry winter months. Built-in aluminum foil layer strengthens the filter core, maintaining shape and extending service life. Reduces sagging, tearing, and blocked airflow seen in standard paper-only filters. Simply remove the old wick and the replacement. Each filter is precisely cut for a snug, leak-free fit, ensuring smooth airflow and clean, steady moisture output without any tools required. Includes 3 replacement wick filters for continuous use through the humidifier season or multiple rooms. For best results, replace every 2-4 weeks depending on water quality. Color: As Shown Material: Filter Paper Package Contents: 3*Wick Filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.