KwikCorners are available for use in TDC and TDF applications. Our KwikCorners come in strapped bundles of 50 and box counts of 200. KwikCorners can be installed using an automatic corner machine or can be installed manually. These precision engineered corner pieces are used to add strength when connecting two pieces of square or rectangular duct work together, and can save up to fifty percent on installation process time. Make it Kwik, buy direct, save time and money.