The Dayton Superior F-67 Ceiling Hanger is designed for Flexicore deck slabs. Two sizes of ceiling hangers accommodate all five of the deck slabs. The 13" ceiling hanger fits the 10" and 12" deck slabs. The F-67 hanger is placed between the slabs before keyways are grouted and topping placed. The Dayton Superior F-68 Ceiling Hanger is commonly used with double tees. The hanger is placed between the tees and used to hang ceilings, utilities, etc. The wide “T” of the hanger provides a large bearing area. 6" length is standard; other lengths are available on request.