Resources - CERTI.US
CERTI Partners; Resources ... When placing a lid on the sump pit, it is important to remember to allow for future removal of the lid, to allow servicing of the sump pump. ... When penetrating fire walls with vent pipe, maintain fire wall rating with fire ... The reduction of radon by air filtration systems is a relatively new approach ...
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certi Contacts: Tel: 719-632-1215 Website: certi.us
certi's website is certi.us