![Aprilaire Genuine OEM Drain Spud No. 4223 for Models: 500 & 600 by Aprilaire: Amazon.com: Tools & Home Improvement Aprilaire Genuine OEM Drain Spud No. 4223 for Models: 500 & 600 by Aprilaire: Amazon.com: Tools & Home Improvement](https://m.media-amazon.com/images/I/117HTOnSi1L._AC_UF1000,1000_QL80_.jpg)
Aprilaire Genuine OEM Drain Spud No. 4223 for Models: 500 & 600 by Aprilaire: Amazon.com: Tools & Home Improvement
![OEM Replacement for Aprilaire Genuine OEM Drain Spud No. 4223 for Models: 500 & 600 by Aprilaire - Walmart.com OEM Replacement for Aprilaire Genuine OEM Drain Spud No. 4223 for Models: 500 & 600 by Aprilaire - Walmart.com](https://i5.walmartimages.com/asr/e4409b82-7f4b-4a12-bf41-08e6383d6b70_1.0872f463c7a2ea10d0f41fbf7aa5fd2a.jpeg)
OEM Replacement for Aprilaire Genuine OEM Drain Spud No. 4223 for Models: 500 & 600 by Aprilaire - Walmart.com
![Amazon.com: TNITRIB 4223 Drain Spud for Aprilaire 600 humidifier Nipple Funnel Fit Models: 500 & 600 : Appliances Amazon.com: TNITRIB 4223 Drain Spud for Aprilaire 600 humidifier Nipple Funnel Fit Models: 500 & 600 : Appliances](https://m.media-amazon.com/images/I/518jVXIN9gL._AC_UF894,1000_QL80_.jpg)
Amazon.com: TNITRIB 4223 Drain Spud for Aprilaire 600 humidifier Nipple Funnel Fit Models: 500 & 600 : Appliances
![Amazon.com: Sconva 4223 Drain Spud Compatible with Aprilaire Humidifier Models 500, 500A, 500M, 550, 560, 600, 600A, 600M Humidifier Parts & Accessories : Appliances Amazon.com: Sconva 4223 Drain Spud Compatible with Aprilaire Humidifier Models 500, 500A, 500M, 550, 560, 600, 600A, 600M Humidifier Parts & Accessories : Appliances](https://m.media-amazon.com/images/I/614XkldI8BL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Sconva 4223 Drain Spud Compatible with Aprilaire Humidifier Models 500, 500A, 500M, 550, 560, 600, 600A, 600M Humidifier Parts & Accessories : Appliances
![Amazon.com: 4223 Drain Spud Replacement for Aprilaire Humidifier Filter 500, 500A, 500M, 600, 600A and 600M Humidifier Parts & Accessories : Appliances Amazon.com: 4223 Drain Spud Replacement for Aprilaire Humidifier Filter 500, 500A, 500M, 600, 600A and 600M Humidifier Parts & Accessories : Appliances](https://m.media-amazon.com/images/I/61WYEIUyIRL.jpg)
Amazon.com: 4223 Drain Spud Replacement for Aprilaire Humidifier Filter 500, 500A, 500M, 600, 600A and 600M Humidifier Parts & Accessories : Appliances
![Amazon.com: Replacement Humidifier Parts 4223 Nipple Funnel Drain Spud Applicable Aprilaire 500&600 : Appliances Amazon.com: Replacement Humidifier Parts 4223 Nipple Funnel Drain Spud Applicable Aprilaire 500&600 : Appliances](https://m.media-amazon.com/images/I/510LvTtWMmL.jpg)
Amazon.com: Replacement Humidifier Parts 4223 Nipple Funnel Drain Spud Applicable Aprilaire 500&600 : Appliances
![Amazon.com: 4233 - Aprilaire OEM Replacement Humidifier Water Drain Spud Nipple Funnel : Health & Household Amazon.com: 4233 - Aprilaire OEM Replacement Humidifier Water Drain Spud Nipple Funnel : Health & Household](https://m.media-amazon.com/images/I/31WF5ujEh-L._AC_UF1000,1000_QL80_.jpg)