When Installing An Electric Outlet, You Must Keep in Mind that for for the ReliaBility of Attaching it in The Wall Under the Legs, You NEED to Install LINING OF RUBER. It is Extremely Important to Ensure The Safety of the Wall in this Case, and this is diamined by The Material Ussed for the Construction of the Walls. If the Grace Blocks Were used, then for the DuraBiley and Quality of the Walls You Can Not Worry. BUT THANKS to Rubber Gaskets, The Wall Will Not Crumble, And the Socket Will Last For A Long Time.