Dogs in Yard Keep Gate Closed Sign 4 Inch by 8 Inch Aluminum. This Sign is a Great Way of Getting Attention and letting Someone Know You Have a Dog on Your Premises and That Gates Should be Closed .040 Aluminum Sign Panel 4 in. x 8 in. Radius Corners and Mounting Holes in Corners Dogs in Yard Keep Gate Closed Sign This sign is a great way of getting attention and letting someone know you have a dog on your premises and that gates should always be closed.