National Comfort Products 14208329 Heat Exchanger 320788-704 What is the connection size

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Optimal Performance: The 40-micron filter element ensures clean air delivery with a high flow rate of up to 80 SCFM

National Comfort Products 14208329 Heat Exchanger 320788-704 What is the connection sizeThe National Comfort Products 14208329 Heat Exchanger is an OEM replacement heat exchanger engineered for precise thermal management within Magic Pak and National Comfort Products (NCP) thru the wall units. Designed to meet specific static pressure requirements, this HVAC heat exchanger utilizes high grade tubular or aluminized steel construction to facilitate superior thermal conductivity and resist the corrosive effects of flue gas condensates. For