Ferco TRIPACT 2 Small Hooks Multipoint Door Lock

With a 20mm rail, the Tripact multipoint lock by Ferco was designed with wooden doors in mind.  However they can and have been used in some uPVC doors but predominantly these are found on timber doors.

The reason for this is that most uPVC doors have a 16mm groove in their profile, allowing for the standard 16mm lock rail to sit nicely inside.  However some older styles did accommodate 16mm and 20mm rails like this one. 

The backset measurements offered by this range are 40mm and 50mm.  Again these are more typical backset distances of wooden doors rather than uPVC, but like with the rail sizes, it has been known to have a 40mm backset on a uPVC door, but less so for the 50mm backset.

As with many of these Ferco locks, they come with a 70mm PZ measurement (the distance between the centre of the euro profile top section, to the centre of the square follower for the handles' spindle), which used to be very popular but has very much been superseded by the industry standard 92mm PZ now.