3/4" x 2-1/2"
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Reviewed by 1 customer
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(1 of 2 customers found this review helpful)
No convection valve
Comments about Pexlined Nipples, 3/4" x 2" (sold in pairs):
These show as an OEM part for A.O. Smith but they lack the valve to stop heat loss through convection currents. It is a problem when there's no clearance between the exhaust and water pipes for insulation.
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