Bindaboo B1136/L821 Retractable Gate in White 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. -Easy to install using included template. -Great for pets and children. Retractable Gate Spacers Features: -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.