Y Duct Connector 12in x 10in x 10in
https://www.dlw.co/shop/404200-y-duct-connector-12in-x-10in-x-10in-12835
https://www.dlw.co/web/image/product.template/12835/image_1920?unique=ba17f97
Made of galvanized steel. Perfect fit. Sealed seams to prevent air leaks.
