Wilkins 4512DA-300 | 2nd Check Assembly for Double Check Detector, 8-10 InchesThe Wilkins 4512DA 300 is a 2nd check assembly component designed for 8 12 inch 350DA and 8 inch 350ADA double check detector assemblies, providing reliable backflow prevention maintenance. Key Specifications: Size: 8 12 Inches Compatibility: 350DA 350ADA Detector Assemblies Component Type: 2nd Check Assembly Connection Type: Retainer Nuts Application: Double Check Detector NOTICE: Do not use with water that is unsafe or of unknown quality without