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N.E. MT | I have 12” rubber test caps on. above water level easy to pop off cap and work on everything. 2x2 peice of 2” foam board and a chunk of conveyor belt to cover the hole. Would like to build thicker spray foam lids but haven’t done that yet and i guess shouldn’t need to. Down to -44f here with -74 windchill Saturday night power was out for almost 4 hours and nothing froze. They are working great for me | |
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