MADE IN THE USA: Compatible with Vornado MD1-0002 fits MD10002 MD10001 MD1-0001 EVAP1 EVAP3 Model 30 / 40 / 50 HU1-0021 Holmes HM250 HM405 HM406 HM725 humidifiers ?This Wick filter Set is a 4-pack. ?This Wick filter is robustly built with premium matieral with an extra outer net to keep the wick stand and sturdy. ?Please replace your filter every 30~60 days to keep your machine fresh and clean. ?Please Use Ctrl+F to Search for Your Model Number (Model #) or Part Number (PN) below EFP 4-Pack Replacement Humidifier Wick Filters Compatible with Vornado MD1-0002 Fits MD10002 MD10001 MD1-0001 EVAP1 EVAP3 Model 30 / 40 / 50 HU1-0021 Holmes HM250 HM405 HM406 HM725 humidifiers - Compatibility: --please use CTRL+F to find your model below: Vornado MD1-0002 Vornado MD10002 Vornado MD10001 Vornado MD1-0001 Vornado EVAP1 Vornado EVAP3 Vornado Model 30 Vornado Model 40 Holmes HM250 Holmes HM405 Holmes HM406 Holmes HM725 Compatible Part Number (P/N): Vornado MD1-0001, MD1-0002 and HU1-0021 - Disclaimer: This product is a generic item that is designed to replace the original part. Any brand names or logos are the registered trademarks of their respective owners. Any use of any brand name or model designation for this product is made solely for purposes of demonstrating compatibility.