LCN closer cover material

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The determination was made that Lead Lined covers are no longer needed for the LCN product line, see below Marketing/EHS document. Lead Lined cover discontinuation letter
All LCN metal covers are steel which is a Ferrous material.   FerrousThese are metals which contain iron. They may have small amounts of other metals or other elements added, to give the ...
The LCN Thru bolts accept 1/4-20 thread. LCN thru bolts are made of steel with zinc plating.
Material used in producing LCN's competitively priced door closers
For Warranty information, visit us.allegion.com/warranty or contact Customer Service at 877-671-7011.  
The LCN closers are not designed nor intended to be exterior mounted in the elements.