This supply air duct plenum is made of galvanized steel with 26 gauge thickness. It measures 12 1/2 x 18 3/4 x 45 inches and is designed for use in HVAC systems. The plenum is made in the United States and is suitable for both commercial and industrial applications. The plenum is classified as a plenum and filter box and is ideal for use in HVAC systems. It is made of high-quality steel and is designed to withstand harsh environmental conditions. The plenum is manufactured by an unbranded/generic brand and is suitable for use in a range of different applications.
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