Drain Guard Sewage Backflow Preventer 3 in. and 4 in. Backwater Valve - Holmes Approved
https://www.probuilderswarehouse.com/shop/1005857047-0-drain-guard-sewage-backflow-preventer-3-in-and-4-in-backwater-valve-holmes-approved-2179133
https://www.probuilderswarehouse.com/web/image/product.template/2179133/image_1920?unique=b31ad15
Brand: Sentinel
Model: DG100
SKU#: 1005857047.0
Barcode: 317037742
