ERA Saracen Gearbox Door Lock Centre Case Replacement uPVC Mechanism 45mmAlmost all ERA multipoints can be interchanged with a deadbolt, hookbolt or Vectis gearbox. Also known as Fab & Fix, Spartan, Westward and Duraflex, Sapa or Saracen.ERA multipoint door lock gearboxes are very distinctive, with a square design and no corner cut-outs. The overall length of the gearbox is 221mm and the width is the backset plus 18mm.Available in 35mm or 45mm backsets, all ERA gearboxes have the same dimensions. ERA multipoint door lock gearboxes feature a 24mm high latch (with 2 distinctive screws in the latch to reverse to latch), a 30mm high deadbolt, and 61mm between them. Gearboxes are held on to the faceplate with 4 screws, which is unusual for a multipoint door lock.