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The most popular of all 4 cylinder lock ranges as it offers value for money in a true commercial quality range of locks
The range features a cleverly designed double spring mechanism; the first spring powers the spring bolt when the door is closed, it is smooth and sufficient for this purpose. The second spring only applies its force to the spindle and consequently the door furniture. This second spring is strong and durable and intended for years of trouble free operation
However, the big benefit to this second spring action is that it makes the latch particularly well suited to modern round bar furniture, helping to avoid the droop that you see on so many doors when an economy has been made in the specification of the latch