Satin Finished Aluminum Stand-off with hidden brass wall mount coupling - accommodates substrates up to 3/8" thick. Satin finish is most suitable for indoor sign and graphic applications. Give your sign a touch of class and add some depth to an otherwise flat installation by including these Satin Aluminum Stand-offs. Typical use is one stand-off per corner for signs up to 4 sq. ft. or each corner and every 10" - 18" along the perimeter for larger signs. The optional decorative wall mounts add even more detail. Guaranteed to increase the perceived value of any wall mounted flat panel or sign blank.