The resulting strawboard is elastic, dense and strong, but lighter than plywood. Because the panels are elastic, they can fit into most attic openings more easily than plywood. ShelfBord has rounded front edges and splinter-free surfaces. The panels come with both sides unfinished, painted white, or finished in with wood grains. IsoUnderlay has no migrating natural oils that can rise to the surface of a board and discolor floor coverings.
Some people use motion detectors to warn when someone is trying to get in.
But American Technologies Safety Beam is designed to let you know when someone is trying to get out, whether the dog from the yard or the kids from their rooms. The beam consists of a transmitter and a receiver that are small enough to be held in your hand. Each unit operates on three AA batteries or an AC adapter. They can be permanently mounted in any area and are self-aligning. When the beam is crossed, a high-volume alarm sounds.