This AmeriVent 4-inch Type B gas vent adjustable elbow (Model 4E45) features a multi-section double-wall design that smoothly offsets obstructions from zero to 45 or 60 degrees. Constructed with a durable galvanized steel outer casing and a corrosion-resistant aluminum inner liner, it ensures maximum safety, structural integrity, and an efficient thermal draft. It includes convenient snap-lock coupling ends for a fast, tool-free connection to standard 4-inch round ducting and heating appliances. This specific item is in used-fair condition, showing some surface wear while remaining fully functional for residential HVAC ventilation projects

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