Connect the four 2-by-4-inch boards in a square pattern. You can use boards longer than 24 inches if desired.
Screw in two 3-inch self-tapping wood screws into the ends of each board to connect one board to the other.
Locate the studs in the ceiling using a stud finder. Studs are spaced 16 inches apart; you want to locate two studs. The access point will use both studs for stability. Mark the location of the studs with a pencil.
Hold the frame up to the ceiling so that the two studs are evenly spaced across the length of the frame. Trace the location of the frame onto the ceiling.
Hammer a small hole to the sides of each stud. Pull down some of the material by hand to look inside the area. You want to identify if any electrical wires are present. Have an electrician reposition the wires before continuing, if necessary.
Cut the shape of the frame out of the ceiling with a reciprocating saw. Insert the saw blade into one of the holes created by the hammer and trace the pencil marks carefully, making sure to cut through the ceiling studs as you go.
Press the frame into place. The frame should fit securely into the open hole and be flush with the studs.
Attach the frame to the studs by drilling two 3-inch self-tapping wood screws through the frame and into the studs at each point where the studs meet the frame.