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Frequently Asked Questions
Made from thick
and thermal performance
CSA listed
Made of borosilicate glass
Astoria Curved Heat Exchanger resources/tamping-tutorial Frequently Asked Questions42 mm diameter curved heat exchanger for Astoria and compatible models. Fast shipping when in stock. When out of stock this becomes a special order item and typically requires 2 4 weeks for processing prior to shipping. Specifications: Diameter: 42 mm Astoria OEM part #: AS_159 Compatibility: Astoria models requiring curved heat exchanger Installation: Direct replacement in boiler circuit Recommended for qualified technician.
