How do the vents attach?
One can attach the vents using any of several methods. The vents were designed to install with four stainless steel straps, included in each package. These straps bend around the back of a wall, and fasten into the vent frame. The exterior flange holds the vent against the front of the wall. If an even more secure hold is desired, a concrete adhesive (Lexel, Liquid Nails, etc.) can be applied to the inside surface of the flange. Be careful to avoid getting any of this adhesive onto any part of the frame but the back surface of this flange; you do not want to accidentally prevent the vent door from opening in case of flood.
