A set of metal door lock gearboxes, typically used in multipoint locking systems, displayed on a white background.
Diagram illustrating how to measure a Mila uPVC door lock centre case gearbox, showing the "Backset" (A) and "PZ" (B) dimensions for correct fitting.
A set of metal door lock gearboxes, typically used in multipoint locking systems, displayed on a white background.
Diagram illustrating how to measure a Mila uPVC door lock centre case gearbox, showing the "Backset" (A) and "PZ" (B) dimensions for correct fitting.
Maco

Maco Old Style Gearbox – Replacement Centre Case for uPVC Multipoint Door Lock – 28mm or 35mm Backset 92mm PZMaco Old Style Gearbox - 35mm Backset - 92mm PZ

1 review
£59.99 SKU: HS1504
Backset
Backset
Order by 2pm for same-day dispatch
Klarna

Pay in 4 installments of [klarna_payment]

Learn more
Eye visibility icon in black, representing monitoring, visibility, or visual deterrence, displayed on a transparent background.

Same-day dispatch on orders before 2pm

The gearbox is the most common part to fail on a Maco multipoint lock — replace just this centre case, not the full strip, and save.Check your backset is 28mm or 35mm before ordering.

Key benefits
  • Direct Maco Old Style replacement - for older uPVC doors
  • Restores multipoint lock function - saves replacing the full strip
  • Standard Maco dimensions - measure your case before ordering
Product overview

Maco Old Style Replacement Gearbox

The Maco Old Style centre case gearbox is the mechanism inside your uPVC door that is operated by the handle. It is the part most likely to fail when a Maco multipoint door lock stops working.

Replacing just the gearbox is far more cost effective than buying a complete new lock. The centre case re-attaches to your existing locking strip.

Key Measurements

The most important measurements are 28mm or 35mm Backset and 92mm PZ.

This gearbox is non-handed, fitting both left and right-handed doors.
Delivery & Returns

How much is delivery?

UK Mainland Delivery is £2.99 on all items no matter how many you order!

Northern Ireland, Scottish Highlands, Channel Islands £6.00.

We do not offer International Delivery (Ireland, France, Spain etc).

When will my order be dispatched?

Orders before 3pm (Monday to Friday) are usually dispatched same day but may take up to 24 hours.

When will I receive my item?

We ship on 2 working day courier. Fully Tracked. Tracking will be emailed on dispatch. 

Special order items such as keyed alike locks will take longer to dispatch. Please refer to product description for lead times. 

I haven't received my item?

Please email us your name, order number and date of purchase.

We prefer email as it allows us time to research and respond.

Returns Information

We operate a 30 day refunds and return policy. 

If you change your mind you must return the product back to us within 30 days of delivery

Please include a copy of your invoice and a note stating reason for return. 

Additional keys, locks keyed alike or built to code are non refundable as they are personalised made to order goods.

Any refund, which is due to a fault or other defect, will include a refund of the applicable delivery charges otherwise not. 

It is the buyers responsibility to arrange the return of goods to us. We do not offer a collection service for returning items. 

Items must be returned including original product packaging and accessories.

We reserve the right to refuse any returns that do not comply with this policy.

Please post returns to the following address:

Home Secure (Online)

Unit 5, Brookfield Drive

Liverpool, L9 7AJ

United Kingdom

Frequently Asked Questions

The Maco old style gearbox is the central mechanism in a multipoint locking system, designed to control the handle and key operation in older uPVC door locks.

Common signs include a loose or stiff handle, difficulty turning the key, or the door not locking properly. These issues often indicate internal wear and should be addressed early.

This gearbox is specifically designed for older lock systems, so compatibility depends on matching the original specifications such as backset, PZ centres, and design.

Yes, in many cases you can replace just the centre case gearbox, which is a cost-effective way to restore functionality without changing the entire locking system.

Older gearboxes are more prone to wear and failure over time, which can lead to sudden lock issues. Learn more in Check This Before Your Next Let-In: Is the Door Gearbox Still Fit for Purpose.