Gu reversible latch deadbolt multipoint lock gearbox pre 2008
The gu multi point gearbox is available in two different backset sizes 30mm and 35mm this can be measured from the edge of the faceplate to the centre of the keyhole alternatively gu do print 30 and 35 on their gearboxes to relate to each backset size the pz centres for this model is an industry standard 92mm this as well can be measured
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