Some of our customers have expressed a desire for many of the same security features of our full sized Security Barrier but in a smaller less obtrusive model. Therefore, the Hale Simple Security Barrier™ is available to be installed directly in front of any size of our pet doors. This option is most effective if you cover the pet door with a dog house, a planter or some other exterior decorative feature. The Simple Security Barrier is available in three sizes. The small barrier is 11? wide × 24 ½? high and works for pet doors up to size "Tall Large". The medium barrier is 14" wide × 29 ½? high and works with our "Tall Large Plus" and "Extra Large" sizes. The large barrier is 16? wide and 35? high and is designed to complement our "Extra Tall Large", "Extra Large Plus" and "Giant" sizes. If a smaller or larger size is desired, custom sizes are also available. The Simple Barrier is made of the same steel as the steel frame option for our standard barrier and has bars dividing the space between the sides to prevent human access through the barrier. The number of divisions varies depending on the size of barrier you choose. It can also be ordered with a cedar wood facade for a more attractive appearance if it is being used by itself. This cedar facade also makes the simple barrier an excellent wind break in front of the pet door. It can be screwed into the ground in front of the pet door and make it extremely difficult if not impossible for a human to fit through the pet door. The dog however can fit between the barrier and the house wall and turn to go into the house. The distance you place the barrier from the wall will vary depending on the size of the pet, the size of the barrier, and the size of the pet door. The barrier has pre-drilled holes in each of its four feet and comes with 9 ? 16 ? bolts to secure it to any solid surface material such as concrete or wood. If used on soil or grass, you would need to use tie-downs. However, please note, that unless the flat barrier is enclosed by a dog house or some other exterior feature, the bolts or tie-downs would be accessible. Therefore, if you are not using one of those features, we recommend our standard security barrier instead. Another excellent use of this product is for keeping a larger dog away from a smaller pet door designed to be used only by cats. Sometimes a dog that is not allowed to use a cat door will see the cats using it freely and attempt to follow them through. They will stick their head into the opening and possibly tear up the pet door flap because they don't fit through. Secure the simple security barrier in front of the cat door (either inside or outside of the house as needed) close enough to the wall that the dog cannot fit between the barrier and the wall. The cats will easily be able to fit between the barrier and the wall to reach the pet door but the dog will be unable to approach the pet door. Order the wooden cover for the flat security barrier to make it more attractive. We also offer installation instructions for attaching the barrier to the ground. For your convenience we have also provided a brief overview of the product in our downloadable information sheet. For more information or for assistance with ordering a security barrier, please call us toll free at 800-646-4773. Otherwise, please place your order by answering the two questions below. Suggested place of front of pet door (smallest model shown): The security barrier should be centered directly in front of the pet door. Distance from the wall varies depending on the size of the pet, the size of the pet door, and the size of the barrier. Take care, however, to install close enough to the wall to make it difficult for a human to fit between the barrier and the wall. (Photos for suggested placement purposes only. Method of securing barrier not shown as it varies depending on type of base material.)