HD72 modular euro-profile lockcases are designed to deliver high performance locking for years. They are the most reliable and durable mortice lock available, featuring a new heavy duty latch technology built in. But this is more than just about strength and durability. HD72 also has a contemporary design and with a 15 year guarantee as standard you can recommend HD72 with confidence. The HD72 Sashlock is for use for sprung or unsprung door furniture weighing up to 930g per pair. The latchbolt can be withdrawn via lever handle and the deadbolt locked and unlocked by operation of the cylinder key/cylinder turn. On a second turn the cylinder will retract the latch head. Suitable for use with euro profile double cylinders or cylinder and thumbturn. It has been tested to over 3.5 million cycles, its robust design makes it ideal for high-frequency areas or where there is a high chance of misuse.