The Heavy Duty D Series Electrified, when the highest quality mechanisms are required, commercial quality D Series locks are your best choice. Precision manufactured to exact tolerances, this top-of-the-line series is best suited for commercial, institutional and industrial use. The heavier duty spring cage features stronger compression springs providing faster lever return action and longer life. It incorporates through bolting, covers the new hollow metal door cutouts now available in the marketplace and has additional rotational stops to control excessive rotation of the lever.

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