BDB1031 Features: Will fit an opening up to 55 inches Comes with Two Sets of Mounting hardware so gate can be used in two different locations Very portable and easy to move from one location to another For indoor and outdoor use Great for pets and children The Bindaboo Spacer Kit is Designed to be used where there is Base Board Molding on the Wall When the Baseboard Molding Protrudes from 1/4 of an inch, all the way to1 inch Thickness The use of the Spacer Kit is Designed to make the Retractable Gate Perpendicular Includes: Easy to install using included template