Frequently Asked Questions

Browse our FAQ page for more information about our brand, door hardware products and warranty.


Gainsborough’s story spans over 50 years. The brand was founded in 1967 in Melbourne, as a manufacturer of fine porcelain and decorative door hardware.

For over five decades, we have built our reputation on developing and producing leading-edge door hardware – innovative levers, locks, deadbolts and accessories, that work silently to reflect your style and needs.

In 2018 Gainsborough joined the Allegion family of brands.

Learn more about Allegion.

Gainsborough does not sell products directly. With more than 1,000 hardware resellers across Australia you're sure to find a Gainsborough reseller near you.

Find an online shop or a local reseller near you:

Gainsborough Hardware products are designed and tested here in Australia to ensure they are suitable for Australian homes and our climatic conditions. Our hardware is made both locally in Melbourne by our Austral Lock plant as well as overseas, in Taiwan and China.

Gainsborough Hardware, part of the Allegion family of brands, is located in Blackburn, Melbourne, where we have an office and our warehouse.

For enquires including assistance with door hardware selection and warranty claims please contact us on 1800 098 094 or email us at

Head Office
31-33 Alfred Street
Blackburn, VIC 3130




Gainsborough warrants its products to be free from defects in material and workmanship for the stated periods from the date of purchase. We offer 7, 10, and 15-year mechanical, 2, 5 10 - year tarnish and 2 - year electrical warranty, depending on range and finish.

You can submit a warranty claim at Make sure to include your contact details (name, address, phone number), product name and photos, if needed.

Read more about our warranty.

We will repair or replace any products which in the opinion of Allegion are defective, provided that products are returned to Allegion, freight prepaid.

Allegion Australia
31-33 Alfred Street
Blackburn, VIC 3130

Please note that we reserve the right to inspect the installation of defective products before any removal and return of any such products. 

For assistance with our smart lock products, please visit our support portal:

If you would like to speak to our friendly Customer Service Team, please contact us on 1800 098 094 or email us at

Yes, Gainsborough offers a range of spare parts for our hardware. Please visit our spare parts page to view our readily available spare parts.

The availability of other parts will depend on the age of your product and therefore we cannot guarantee that your request will be fulfilled. Please contact our Customer Service Team for more information. 

Visit our contact page to submit an enquiry: or email us at 

For phone enquiries please contact our Customer Service Team on 1800 098 094. 




A latch is the mechanism that slides into the edge of the door and retracts or protrudes with the turn of the doorknob or lever. The latch keeps the door closed and allows it to open.

Read our Hardware 101 A-Z Glossary.

Backset is the distance from the edge of the door to the centre of the hole for your lever or knob.

Read our Hardware 101 A-Z Glossary.

A strike plate is the metal piece attached to the door jamb – part of the door frame. As the door closes, the latch mechanism strikes the plate mounted to the jamb and the strike plate catches the mechanism and holds the door closed.

Read our Hardware 101 A-Z Glossary.

Handing describes the side of the door the hinges are on when the door is opening towards you. To determine the handing you need, always stand on the outside of the door:

1/ | If the hinges are on the left hand side, you will need to order a right hand dummy set.
2 | If the hinges are on the right hand side, you will need to order a left hand dummy set.

Majority of our levers are non-handed meaning they can installed on both sides.

Read our Hardware 101 A-Z Glossary.

Required door thickness depends on the product but most of our hardware is suitable for 32-40mm doors. The standard thickness of the door in Australia is 35 mm.

For rebated double doors you might have to use a rebate kit to install our hardware. 

Lever or knob entrance sets have key cylinder inside the lever or knob.

Combination set consists of a key-in- lever or key-in-knob entrance set and a matching deadbolt that can be installed above the lever. Consider the combination set for added security and a peace of mind.




It’s recommended that exterior doors are secured with a deadbolt that has a key cylinder.

You can have a single and double cylinder depending on your needs. For more security, consider the double cylinder deadbolt, with key on both sides. For more convenience, go with the single cylinder deadbolt which has a thumbturn on the internal side.

At Gainsborough we offer a range of deadbolts to match your other hardware. Visit this page to learn more.

We don't offer samples of our finishes. To view our products, you are welcome to visit selection centres - Gallerie in Port Melbourne, VIC or Build and Design Centre in South Brisbane, QLD.

Depends on where you live.

If you live near the ocean, then your door hardware has to be able to withstand the elements. Look for premium materials like stainless steel that are salt resistant and will stand up to the test of time.

Make sure to check out our Ferro collection and learn about best stainless-steel hardware for coastal conditions.

Our Gainsborough Freestyle smart lock is the perfect choice for a first smart locking device! Designed with mechanical and electrical functionalities, that complement each other, our Freestyle features a signature 3-in-1 Trilock deadlocking and a key override for extra peace-of-mind!

Find out more.




Yes you can! Door hardware installation might look tricky at first, but if you follow instructions and templates provided in the packaging, and have all necessary tools available to you, it is a relatively easy job.

For more information and helpful tips, visit our DIY Hub.

If you are getting a house built, an on-site carpenter will do it for you.

If you are replacing your door hardware in an existing dwelling, you can request assistance from a locksmith. Gainsborough recommends that you use API Security Solutions for door hardware installation.

Learn more here: or call API on 131 539.

To install door hardware you will need: Drill with suitable spade bits and a holesaw, Hammer, Sharp chisel, Door handle jig and a Door wedge

Don’t forget the DIY staples: Tape measure, Pencil, Screwdriver, Sharp utility knife, Set square

Remember safety: Safety glasses and earmuffs

Read our Ultimate Hardware Guide to get you started.




To get in touch with our team please contact us at or on 1800 098 094.

If you have an existing account with Allegion, please get in touch with your account manager.

For new business, please contact us at or on 1800 098 094.

Gainsborough offers residential construction keying and master keying for any sized project that is easy with fast turn-around times.

The service is available to you at no cost.

Gainsborough offers a wide range of access control services, suitable for a variety of projects including refurbishments and multi residential builds - no job is too big or too small.  

Whether you are looking for an electronic or mechanical solution, we have access to some of the industry’s leading products and expertise in fire, accessibility and building code compliant hardware. We'll help you create an access solution that is simple, compliant and cost effective for your unique needs.

Read about the services we offer.

Gainsborough provides free installation and training, on top of our free scheduling service.

With a team of technicians and customer service located around the country, we can support you and your customers every step of the way throughout your project.

Please note that our minimum order value for trade customers is one hundred and fifty ($150.00 GST excl) dollars per order. Failure to comply may result in a charge.

Read our terms & conditions here.

Need more info?
Get in touch with our team.

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