Yale Lockmaster Extendable Window Gearbox

These gearboxes accept croppable shootbolt rods and are designed for 476mm - 1520mm window sizes.
 
Features:
Screw centres: 43mm
Faceplate: 340mm x 16mm
Available in 20mm & 22mm backsets
Available with 7.7mm or 9mm cams
Shootbolt plates interlock with the mushroom plate for greater security
Reverse action shootbolt espagnolette
Rapid fix non-cropable version
Supplied with cover plates