The ALL SIGN SYSTEMS Universal Channel Clamp (UCC) for fixing all types and sizes of sign that incorporate ALL SIGN SYSTEMS channel sections on the rear. The clamp slides into the extruded ALL SIGN SYSTEMS channel sections and then accepts ALL SIGN SYSTEMS Stainless Steel Band to facilitate the fixing of the sign to any size or shape of post. The two piece design features a saddle that slides into the ALL SIGN SYSTEMS channel. The UCC accepts all bands up to 19mm and as the band tightens the saddle clamps tightly against the channel holding the sign securely in place.