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CSLB C20 Trade Tougher Questions Correctly Answered.
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CSLB C20 Trade Tougher Questions Correctly Answered. Duct systems should be installed according to ____ Standards - CORRECT ANSWER SMACNA The type of flue pipe used on gas 80% standard furnace venting systems serving gas fired systems - CORRECT ANSWER Type B-Vent Which type of gauge woul...
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