Made of extracted aluminium profiles which are 175 mm high and up to 6,000 mm long, every profile includes a guide or rail to hold down the nuts and bolts, dovetail coupling is the system used for joining the slats. This is the system that is normally used in information signposting along roads, dual carriageways, motorways, etc. and it is a very resistant system which is easy to install.
The support for this type of sign are structures of galvanized steel, galvanized IPN or telescopic combinations of aluminium. The regulations that control this type of sign are UNE 135311 and UNE-EN 12899-1.