Championing the Oikos security door, the Tekno’s greatest design feature is its unique, invisible hinge, which disappears when the door is closed. This piece is ideal for projects looking to combine aesthetic refinement and high security or fire safety standards. Fire rated at El30, El60, El90 and class 3 break-in resistant, Tekno is the perfect, security conscious, replacement for the unappealing, regulation fire-door.