Schlegel BHD inline patio door lock kit with spacers, strike and screws to convert for various backsets

Cylinder Type: Euro profile

Backset: 23/32 inch (18.5mm)  0.728 (comes with a selection of spacers for 22.5mm, 25mm and 27mm)

Spindle Hub: 1/4 inch (7mm)  

Locking Device: 2 mushroom pins ( some doors also used vertical locking rods )

Handle to Cylinder PZ: 40mm centres

NOTE: 

Spacers are used to convert the basic 18.5mm backset mortise lock to 

7/8 inch (22.5mm) 0.885"

1 inch     (25mm)  0.984" 

1-1/16 inch  (27mm) 1.062"