Y Duct Connector 10in x 10in x 10in
https://www.dlw.co/shop/404000-y-duct-connector-10in-x-10in-x-10in-12838
https://www.dlw.co/web/image/product.template/12838/image_1920?unique=d9f876c
Made of galvanized steel. Perfect fit. Sealed seams to prevent air leaks.
