These grid sign holders feature a 2" x 3 1/2" (W x H) mounting clip that will firmly fit over 1/4" grid or slatgrid panels. Constructed of steel with mitered corners and a black finish. Place advertisements at the top of grid displays with these grid mount sign holders to grab the attention of customers. Inserts can easily be changed through the top loading slot on the frames. This sign holder will accept 22" x 7" (W x H) sign cards up to 1/8" thick.