Measure approximately 5 ½ inches from each corner of the day bed frame and mark for drilling. Drill 3/8-inch holes into each marker (eight holes total). Insert lag-eye bolts into each hole. A lag-eye bolt is a screw with a loop on one end.
Drill four 3/8-inch holes into the ceiling joists (one for each corner of the day bed). Screw lag-eye bolts into each hole.
Attach a quick link to each lag-eye bolt on the ceiling and to the end of each chain (eight total quick links). A quick link is a small, strong metal link which opens and closes to allow for easy, sturdy connections.
Position two sawhorses under the ceiling lag-eye bolts. Place the day bed frame on top of the sawhorses.
Slide each chain through the two lag-eye bolts on all four corners of the day bed. Clasp each chain to the ceiling quick links. Remove sawhorses carefully.