Shim Plates are used for mounting Security Latches onto doors with extra deep door frames. These 1/4in. plates can be stacked together to create more depth for mounting. 

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*Please check with your local fire department before purchasing Security Latch or any other door security product, as some fire codes may prohibit their use. All Security Latch Bars are to be used to secure the building, only when the building is not occupied.