Made entirely of galvanized steel with possibility of fire in polyurethane powder coating for exterior. They consist of double uprights "U" from 15x15x15 available in thicknesses 10/10 - 12/10 and 15x20x15 single thickness with reinforced edges, connected by slats straight or corrugated profile steel with thickness 2 / 2,5 / 4 mm. the folded tape. Work hanging trolleys sliding on ball bearings, with lower rail fixed or liftable. The closure consists of a lock YALE or SEA to double clasp or reinforced. A request with the gate groove 15x15x15 is manufactured in AISI 304 stainless steel.