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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

Neil Colbourne
Verified Reviewer
Author didn't leave any comments.
Helpful Report
Posted 6 months ago
Very good company and quick dispatch, highly recommended!
Helpful Report
Posted 6 months ago
Scott Barclay
Verified Reviewer
A bit rough sounding when turning to lock and unlock position position
Helpful Report
Posted 7 months ago
Would recommend to others with out hesitation
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Posted 7 months ago
The gearbox works perfectly.Had no problems changing old one.Just make sure you take the correct measurements.
Helpful Report
Posted 7 months ago
Louise Fletcher
Verified Reviewer
Order this as a replacement for our broken one, very competitive pricing from GBDIY Store, very quick postage, would totally recommend and 100% use again. Thank You
Helpful Report
Posted 8 months ago
Alan Camfield
Verified Reviewer
The gearbox arrived as stated during Easter weekend, the bolt was marginally bigger than the original but managed to adjust the multi point assembly ok.
Helpful Report
Posted 8 months ago
Andrew Davies
Verified Reviewer
Top quality
Helpful Report
Posted 8 months ago