Middle Atlantic WMRK-Z4 Seismic BracketsWhen properly installed, Middle Atlantic WMRK Z4 Seismic Brackets bring any Seismic Certified WMRK Series enclosure to applicable Zone 4, Seismic Design Category (SDC) D and Seismic Use Group III Upper Floor Essential Equipment rating and have an Ip rating of 1. 5. Includes four brackets.
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