Versatile sign holder system that, when coupled with our extruded Thin Poster Channel or Heavy-Duty Gripper Poster Channel (both sold separately), is capable of displaying materials up to 6.36mm thick centered on top of gondolas without the need for adhesive or expensive magnets. The base has gripper fins that attach securely onto the top of standard retail gondolas. Removable and easy to relocate. Choose the proper channel for the sign thickness, insert the channel into the base and then insert the sign – it’s that easy.