We recommend two stainless steel Wall Spacers for every piece of Wall Mount Strut 5 ft. in length or shorter. (If you will be using Wall Mount Strut longer than 5 ft. you must use three Wall Spacers). The Wall Spacers provide a space between the strut and the wall, eliminating a shelf for particles and filth to grow.
FGWMWS - Wall Spacers for Food Grade Strut - $5.99
FGWMWSL - Long Wall Spacers for Food Grade Strut - $15.75