B.ZETA is a basic mechanical Defender® that covers most door thicknesses in just 2 heights. It is classified as security level 1 and is manufactured with or without a completion escutcheon. It is also available in a version for Dierre doors.
The keyway is protected by a chrome-plated steel rotating washer and the Defender® aluminium/brass cladding is available in 7 finishes.
