Grade 13 Parliament Hinge. Designed for doors which need to fold back on themselves creating the maximum possible opening through a doorway. Traditionally used to allow a door to fully open 180 degrees, back onto a wall. The extra projection allows the door to clear any obstruction - i.e.. an architrave. Certified to BS EN 1935. They have a CE mark and are Certifire tested. comes with a 25 year mechanical guarantee and is Fire door rated. Suitable for all domestic, commercial and industrial environments. Available in 2 sizes.