Gearboxes

This is a guide to help you identify a replacement gearbox for your Maco multipoint door lock. The Maco MK1 and Maco MK2 series of replacement gearbox are now discontinued, follow this guide to identify which of the newer series you should use as a replacement.

Cego multipoint door locks are commonly known as Zenith, Bowater or Staybrite locks. The Cego multipoint door locks are now discontinued and are no longer available through Duffells but are still commonly found in doors today. Below we have a guide to the replacement gearboxes, a guide on how to change the hook boxes, and a guide on how to reverse the latch of the center gearbox.

The original Fullex lock gearboxes were made of a heavy-duty cast metal 20mm thick case in either a yellow passivated or grey finish and would have originally been attached to a faceplate of varying widths up to 24mm. Each model although generic in size had multiple variations usually centered around the fixing lugs and anti-slam mushroom, for example, Case ‘B’ had 47 different variants.

Mila is among the most common UPVC locks with some variations being stamped Coldseal or Swiftframe. Some of the full-length versions are still available however the popular 3 part versions have been discontinued. For this reason, the use of a replacement gearbox may be required.

Yale Gearboxes have been made in numerous different styles and this guide will help you identify the correct version. Yale incorporates the Paddock and Lockmaster brands and has made bespoke locks for a huge number of customers including Mila and Safeware.