VIKING Layflat Duct Connectors D-Ring

No more staples, tape or hog rings! The D-Ring is the fastest and easiest way to make layflat duct connections. Save time, money and manpower. The D-Ring provides the greatest airflow of any method now in use. Ducts can be connected by one in just seconds. Best of all, they are reusable. A box of D-Rings contains 24 of any individual size 18 inch, 12 inch, 8 inch and 6 inch. Fits any size layflat from 24″ to 6″