Exchange graphics with ease • ONLY 1.25" deep Trucks, Buses, Commercial, Industrial, Retail, etc. These frames can be used with any rigid sign substrate: wood, plastic, metal, etc. Up to .375" thick with original radius extrusion, up to .5" with the architectural extrusion. Extruded aluminium construction ensures a light, durable, quality product, available in black painted or clear satin anodized finishes. The Clip-in frame is easy to mount / install, exchange signs. Its slim serrated profile makes it fit within any commercial, industrial or retail environment. Perfect for displaying signs indoors and/or outdoors. *Front covers, backing panels, and installation corners supplied only at customers request.