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GU Old Style Replacement Door Lock Gearbox Centre Case 35mm Reviews

4.6 Rating 65 Reviews
Read GB DIY Store Reviews

GU Old Style Gearbox 35mm
A replacement centre case gearbox for the GU old style multipoint door lock mechanism. If you're having problems with your door lock, the gearbox is almost always the problem and changing it to a GU Old Style Gearbox is as simple as removing a few screws.
GU Old Style Gearbox Information
Important Measurements: 35mm Backset / 92pz Centres
This is the mechanism inside the door that is operated by the handle.
Most likely to be the problem when a lock fails.
Reversible latch for left or right-handed doors
Fitting Advice
The gearbox is easily reattached to the locking strip via three-star head screws. 
Technical
A full technical diagram is included in the image gallery.

About GB DIY Store:

GB DIY Store is a family run, UK based company, which offers an extensive range of uPVC hardware which includes window handles and door handles, repair parts, tools and fitting supplies.

The team here has over 25 years experience in this industry, we have literally done it all. We started out manufacturing and installing windows and doors and slowly progressed in to repairs. Now, we offer a very extensive range of repair parts for windows and doors.

With our knowledge and wide range of repair parts, we can solve any problems you may have with your uPVC windows and doors. Whether its a repair, upgrade or just some good old fashioned advice, we've got it.

Our team is always happy to help, so please do not hesitate to contact us.

Visit Product Page

Phone:

01623622205

Email:

nathan@gbdiy.co.uk

Location:

Unit 1, Fox Covert Way,
Mansfield
Nottinghamshire
NG19 0FR

Author didn't leave any comments.
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Posted 4 weeks ago
It is perfect and very very good thanks
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Posted 1 month ago
Geoff McClure
Verified Reviewer
Easy to fit, no problems at all great service
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Posted 1 month ago
DAVID SHERWIN
Verified Reviewer
Great buy, pictures and measurements on web page were great help.
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Posted 1 month ago
The lock was very good quality and it seemed the measurements were the same but I knew swapping it over wouldn't be straight forward. The existing strips that fasten the door to the other door were all out, the latch was bigger than the existing one as well. As it was for an shed/lean two at my daughter's new home it didn't need the same level of security. Door locks now as previous owners snapped key off in barrel, hence the need for a new mechanism. Was pleased with the purchase and happy we have a lockable pair of doors.
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Posted 2 months ago
Geoffrey John Smith
Verified Reviewer
Good quality gearbox at a fantastic price, description good, postage fantastic,arrived next day,cannot fault your service, have already passed your name on to several tradesmen, keep it up
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Posted 2 months ago
John Goddard
Verified Reviewer
Author didn't leave any comments.
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Posted 3 months ago
Mortice bolt not in line with hole in GU faceplate so protruded upward at an angle. Filing needed to rectify the problem.
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Posted 3 months ago