#2 Check Assembly Repair Kit 6" 375ASTDA/350ASTDA SKU: RK6-350ASTDACK2 $817.00 Login for better price Select Quantity -+ Add to Cart Additional DetailsResourcesManufacturer: Wilkins Size: 6 Inch Product model: 350ASTDA, 375ASTDA Installation and Maintenance Instructions 2 1/2" - 6" Specification Sheet Repair Parts Guide Zurn Wilkins Backflow Prevention 350 (4 inch & 6 inch) - How to Repair Zurn Wilkins Backflow Prevention 350AST - How to Maintain