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Not every door set up works best with a lever handle. Sometimes, this doesn’t become apparent until the lock has already been fitted and large amounts of pressure applied to the handle itself.


Designed as a retrofit solution for existing BL5000 and BL5400 setups, this knob handle will just replace the current handle. This is simply done by removing the grub screw on the current handle and slotting the new knob on.

Available in satin chrome (S524) and satin stainless (S525).

BL5100 Knob

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